BFF (Best Friend Forever) by TREASURE (The Mysterious Class) | Piano Letter Notes

Are you looking to play BFF (Best Friend Forever) by TREASURE (The Mysterious Class) on the piano, using easy letter notes, but aren’t sure where to start, you’ve come to the right place! This timeless track is a favorite for many, and with our easy piano letter notes, you’ll be playing it in no time. Whether you’re a beginner or just looking for a quick way to learn, our simple format breaks down the song so it’s fun and effortless to master. Ready to get started? Keep reading, and you’ll find the letter notes waiting for you below!
RH:4|a--a-a-a---a-a-a---a-a-a--|
LH:3|a---------------a---------|
LH:3|C---------------d---------|
LH:3|e---------------F---------|

RH:4|-a-a-a---a-a-a---a-a-a---a|
LH:4|-----------C--------------|
LH:3|------a---------------a---|
LH:3|d--e--C--aa--a---agg-ad--a|
LH:3|------e---------------F---|

RH:5|------e-C-----C-------C---|
RH:4|-a-a-a----bae-C-----bb-bbb|
RH:4|------------b-------------|
LH:3|----------------a-------a-|
LH:3|gg-a------------C-------C-|
LH:3|----------------e-------e-|
LH:2|------------a--a--a---a---|
LH:1|------------a-----a---a---|

RH:5|C-----d-C-CC--CC----C-----|
RH:4|-aa---------ba--bae-C----a|
RH:4|------------------b-------|
LH:3|------a-------a-------a---|
LH:3|--d--dd-d---d-d-------C---|
LH:3|------F-------F-------e---|
LH:2|--d-----d---d-----a--a--a-|
LH:1|------------------a-----a-|

RH:5|--C-----C---C-----C-------|
RH:4|aa-b------ba--baaF-b---aaa|
LH:3|----a-------a-------a-----|
LH:3|----C---d---d-d-----d-----|
LH:3|----e-------F-------F-----|
LH:2|--a-----d-----d---------a-|
LH:1|--a---------------------a-|

RH:5|-C-------C-------C------Fe|
RH:4|b-a-Fa-ab-a---aab-a-Fa----|
LH:3|--a-------a-------a-------|
LH:3|--C-------C---d---d--d--d-|
LH:3|--e-------e-------F-------|
LH:2|-----a--a-----d------d--d-|
LH:1|-----a--a-----------------|

RH:5|FeF----C---C---C---C------|
RH:4|----aab-aFa-b-a-b-a-bbeCeC|
RH:4|----------------------bbbb|
LH:3|a-------a-------a-------a-|
LH:3|d-------C-------C---d---d-|
LH:3|F-------e-------e-------F-|
LH:2|----a------a--a-----d-----|
LH:1|----a------a--a-----------|

RH:5|-----C----C---------------|
RH:5|----------e---------------|
RH:4|bbbbb-dCC-a---eF-a--F-eF-C|
RH:4|------baa-----------------|
LH:3|------------a--a-a--a---a-|
LH:3|------------C--C-d--ddd-d-|
LH:3|------------e--e-F--F---F-|
LH:2|----------a----------dd---|
LH:1|----------a---------------|

RH:4|--------CdC-e-F-e---eF-a--|
RH:3|b----aab---bb-b-b---------|
LH:3|--a--a-a--a---a---a--a-a--|
LH:3|d-d--d-C--C---C---C--C-d--|
LH:3|--F--F-F--F---F---e--e-F--|
LH:2|d----------FF---a---------|
LH:1|-----------FF---a---------|

RH:5|-----C-----C--------------|
RH:4|F-eF--e----F-e------eeeCCC|
RH:4|------b------a------------|
LH:3|a---a---a--a-a--a---a---a-|
LH:3|ddd-d-d-d--d-C--C---C---C-|
LH:3|F---F---F--F-F--F---F---e-|
LH:2|-dd---d----------FF---a---|
LH:1|-----------------FF---a---|

RH:4|C--------eeeeCCCC---------|
RH:3|-bbababa---------bbababa--|
LH:3|-a-a--a---a---a--a-a--a---|
LH:3|-C-d--ddd-d-d-d--d-C--C---|
LH:3|-e-F--F---F---F--F-F--F---|
LH:2|-------dd---d----------FF-|
LH:1|-----------------------FF-|

RH:4|--CC--CC--C-aFC-eCeCeCeCeC|
RH:4|--------------a-----------|
RH:3|ab--ab--ab--ab------------|
LH:3|a---a--a-a--a---a---a--a-a|
LH:3|C---C--C-d--ddd-d-d-d--d-C|
LH:3|F---e--e-F--F---F---F--F-F|
LH:2|--a----------dd---d-------|
LH:1|--a-----------------------|

RH:5|e-eee-e-------------------|
RH:4|e-eee-e--------------dCdC-|
RH:3|--------a-----------------|
LH:3|------------a-------a-----|
LH:3|------------C-----d-d-----|
LH:3|------------e-------F-----|
LH:2|--------a---------d-----a-|
LH:1|--------a---------------a-|

RH:5|e---C---------------------|
RH:4|--------bbb---a-----------|
RH:3|--------------a-----------|
LH:3|--a-------a-------a-------|
LH:3|--C-----d-d-------C-----d-|
LH:3|--e-------F-------e-------|
LH:2|--------d-----a---------d-|
LH:1|--------------a-----------|

RH:5|------e---C---------------|
RH:4|-dCdC---------bbb---C---C-|
RH:4|--------------------a-----|
RH:3|----------------------ab--|
LH:3|a-------a-------a-------a-|
LH:3|d-------C-----d-d-------C-|
LH:3|F-------e-------F-------e-|
LH:2|----a---------d-----a-----|
LH:1|----a---------------a-----|

RH:4|--CdC-----C---C---CdC-----|
RH:3|ab---bb-a---ab--ab---bb-a-|
LH:3|------a-------a-------a---|
LH:3|---dd-d-------C----dd-d---|
LH:3|------F-------e-------F---|
LH:2|---dd-----a--------dd-----|
LH:1|----------a---------------|

RH:5|------------------eeCCeeC-|
RH:4|-------------dCdC---------|
RH:3|a-------------------------|
LH:3|----a-------a-------a-----|
LH:3|----C----dd-d-------C----d|
LH:3|----e-------F-------e-----|
LH:2|a--------dd-----a--------d|
LH:1|a---------------a---------|

RH:5|e-e-------CC----CC----C---|
RH:4|---aa---ab---bab---aab--aa|
LH:3|--a---a-a--a-a-aa-----a-a-|
LH:3|d-d---C-C--C-C-CC-----d-d-|
LH:3|--F---e-e--e-e-ee-----F-F-|
LH:2|d-------------------------|

RH:5|------CC-d-C--eC------eC--|
RH:4|ab-aab------------ba-a----|
LH:3|-a-a-aa-----a-a--a-a-aa---|
LH:3|-d-d-dd-----C-C--C-C-CC---|
LH:3|-F-F-FF-----e-e--e-e-ee---|

RH:5|---------CdCdCd-C---C-C-C-|
RH:4|ba--b----eFeFeF-e----b---b|
LH:3|--a-a-----------------a---|
LH:3|--d-d-----------------C---|
LH:3|--F-F-----------------e---|
LH:2|------------------a------a|
LH:1|------------------a------a|

RH:5|C-C-C-C-C-C-C-C-C-C-C-CCC-|
RH:4|-b-b---b-b-b---b-bCbe-----|
RH:3|-------------------b------|
LH:3|----a-------a-------a-----|
LH:3|----C---d---d--d--d-d-----|
LH:3|----e-------F-------F-----|
LH:2|--a-----d------d--d-----a-|
LH:1|--a---------------------a-|

RH:5|CCC-CCCCCC-CCCC-d-CCCCC---|
RH:5|----------------C---------|
RH:4|---------F-------------aaa|
LH:3|--a-------a-------a-------|
LH:3|--C-------C---d---d-------|
LH:3|--e-------e-------F-------|
LH:2|-----a--a-----d-----------|
LH:1|-----a--a-----------------|

RH:4|aba-----eF-a--F-eF-C------|
RH:3|----a---------------b----a|
LH:3|------a--a-a--a---a---a--a|
LH:3|------C--C-d--ddd-d-d-d--d|
LH:3|------e--e-F--F---F---F--F|
LH:2|----a----------dd---d-----|
LH:1|----a---------------------|

RH:5|-------------------------C|
RH:4|--CdC-e-F-e---eF-a--F-eF--|
RH:3|ab---bb-b-b---------------|
LH:3|-a--a---a---a--a-a--a---a-|
LH:3|-C--C---C---C--C-d--ddd-d-|
LH:3|-F--F---F---e--e-F--F---F-|
LH:2|-----FF---a----------dd---|
LH:1|-----FF---a---------------|

RH:5|-----C--------------------|
RH:4|e----F-e-------C-dC------C|
RH:4|b------a------------------|
RH:3|--------------a-----b-ab--|
LH:3|--a--a-a--a---a---a--a-a--|
LH:3|d-d--d-C--C---C---C--C-d--|
LH:3|--F--F-F--F---F---e--e-F--|
LH:2|d----------FF---a---------|
LH:1|-----------FF---a---------|

RH:4|------CdC------C------C---|
RH:3|aaa-ab----b-ab--aaa-ab-bab|
LH:3|a---a---a--a-a--a---a---a-|
LH:3|ddd-d-d-d--d-C--C---C---C-|
LH:3|F---F---F--F-F--F---F---e-|
LH:2|-dd---d----------FF---a---|
LH:1|-----------------FF---a---|

RH:4|C---C---C---CCC-CCCCC-CCC-|
RH:4|--------------------e-eee-|
RH:3|-bab-bab-bab--------------|
LH:3|-a-a--a---a---a--a-a------|
LH:3|-C-d--ddd-d-d-d--d-C------|
LH:3|-e-F--F---F---F--F-F------|
LH:2|-------dd---d-------------|

RH:5|--------------------e---C-|
RH:4|e--------------dCdC-------|
RH:3|--a-----------------------|
LH:3|------a-------a-------a---|
LH:3|------C-----d-d-------C---|
LH:3|------e-------F-------e---|
LH:2|--a---------d-----a-------|
LH:1|--a---------------a-------|

RH:4|--bbb---a------------dCdC-|
RH:3|--------a-----------------|
LH:3|----a-------a-------a-----|
LH:3|--d-d-------C-----d-d-----|
LH:3|----F-------e-------F-----|
LH:2|--d-----a---------d-----a-|
LH:1|--------a---------------a-|

RH:5|e---C---------------------|
RH:4|--------bbb---C---C---CdC-|
RH:4|--------------a-----------|
RH:3|----------------ab--ab---b|
LH:3|--a-------a-------a-------|
LH:3|--C-----d-d-------C----dd-|
LH:3|--e-------F-------e-------|
LH:2|--------d-----a--------dd-|
LH:1|--------------a-----------|

RH:4|----C---C---CdC-----------|
RH:3|b-a---ab--ab---bb-a-a-----|
LH:3|a-------a-------a-------a-|
LH:3|d-------C----dd-d-------C-|
LH:3|F-------e-------F-------e-|
LH:2|----a--------dd-----a-----|
LH:1|----a---------------a-----|

RH:5|------------eeCCeeC-e-e---|
RH:4|-------dCdC------------aa-|
LH:3|------a-------a-------a---|
LH:3|---dd-d-------C----dd-d---|
LH:3|------F-------e-------F---|
LH:2|---dd-----a--------dd-----|
LH:1|----------a---------------|

RH:4|----------------C-----C-CC|
RH:4|----------------e---------|
LH:2|----------------a--aa-a--a|
LH:1|----------------a--aa-a--a|

RH:4|CCC--Cd-----ddddddeee-C---|
RH:3|----b---------------------|
LH:3|------d--dd-d--dd-d-------|
LH:2|a-a---d--dd-d--dd-d---a--a|
LH:1|a-a-------------------a--a|

RH:5|--CCC--e----------C-------|
RH:4|--CCC--e--a-C--d--e-C-Cd--|
RH:4|------------a--b----G-Ga--|
RH:3|----------a---------------|
LH:3|------------d--dd-d--dd-d-|
LH:2|a-a--aa-a---d--dd-d--dd-d-|
LH:1|a-a--aa-a-----------------|

RH:5|--e-----CCC-CC-C-Cd-----dd|
RH:4|e-e-----------bedeF-----FF|
RH:4|b-a-------------b---------|
LH:3|------------------d--dd-d-|
LH:2|--a--aa-a--aa-a---d--dd-d-|
LH:1|--a--aa-a--aa-a-----------|

RH:5|ddddeee-C-----CCC--e--e-a-|
RH:4|FFFFaaa-e-----CCC--e--e-a-|
LH:3|-dd-d-------------------d-|
LH:2|-dd-d---a--aa-a--aa-a---d-|
LH:1|--------a--aa-a--aa-a-----|

RH:5|aa--a-b-bb--G-a-------a-e-|
RH:4|aa--a-b-bb--G-a-------a-e-|
LH:3|-dd-d--dd-d---------------|
LH:2|-dd-d--dd-d---------------|

RH:5|eea-----------------------|
RH:4|eea-C---d-e-a---e-d-C---C-|
RH:3|-----------------------b--|
LH:3|--------a-------a-------a-|
LH:3|--------C-----d-d-------C-|
LH:3|--------e-------F-------e-|
LH:2|----a---------d-----a-----|
LH:1|----a---------------a-----|

RH:4|d-C-------C---d-e-a---e-d-|
LH:3|------a-------a-------a---|
LH:3|----d-d-------C-----d-d---|
LH:3|------F-------e-------F---|
LH:2|----d-----a---------d-----|
LH:1|----------a---------------|

RH:5|--------a-e-eea-----------|
RH:4|C-------a-e-eea-C---d-e-a-|
RH:3|---ab-b-a-----------------|
LH:3|----a-------a-------a-----|
LH:3|----C-----d-d-------C----d|
LH:3|----e-------F-------e-----|
LH:2|a---------d-----a--------d|
LH:1|a---------------a---------|

RH:4|--e-d-C---C-d-C-------C---|
RH:3|---------b----------------|
LH:3|--a-------a-------a-------|
LH:3|d-d-------C----dd-d-------|
LH:3|--F-------e-------F-------|
LH:2|d-----a--------dd-----a---|
LH:1|------a---------------a---|

RH:5|--------------eeCCeeC-e-e-|
RH:4|d-e-a---e-d-C------------a|
LH:3|a-------a-------a---------|
LH:3|C----dd-d-------C----dd---|
LH:3|e-------F-------e---------|
LH:2|-----dd-----a--------dd---|
LH:1|------------a-------------|

RH:4|a-------------------------|
BFF (Best Friend Forever) by TREASURE (The Mysterious Class) Piano / Keyboard Easy Letter Notes for Beginners
Congratulations! You’ve now reached the end of our guide to playing BFF (Best Friend Forever) by TREASURE (The Mysterious Class) on the piano. With the easy piano letter notes provided, you have everything you need to bring this beloved song to life, whether you’re practicing alone or performing for friends and family. Remember, learning piano is all about patience, practice, and passion. Take your time mastering each part of the song, and don’t worry if it doesn’t sound perfect at first—every great musician started somewhere!

As you become more comfortable, try experimenting with your own style and dynamics to make the song truly your own. And don’t forget, music is meant to be enjoyed, so celebrate your progress and have fun along the way.

If you enjoyed this tutorial, be sure to explore the rest of our collection of easy piano letter notes for more of your favorite songs. There’s always another melody waiting to be learned! Keep practicing, keep playing, and most importantly, keep sharing your love of music with the world. Happy playing!

Quick guide on how to read the letter notes

how to read and play the letter notes
Each group of letter notes is played from left to right, and vertical letters on the same column are played together.

The numbers in front of each line are the octave, each octave has an unique color so you can easily follow them.

Lowercase (a b c d e f g) letters are natural notes (white keys, a.k.a A B C D E F G ).
Uppercase (A C D F G) letters are the sharp notes (black keys a.k.a. A# C# D# F# G#), look at the image below to see where each letter note is on the piano keyboard.

The lines / dashes (-) between letters indicates timing to play the notes. Just listen to the audio file at the top of the post to figure out the time lenght of the dashes (usually 5-6 dashes is about 1 second)

RH / LH means Right Hand / Left Hand and it's mostly for people who play the piano, it tells them with what hand to play the lines. Also, if you want to play a easy version of the song, playing only the RH lines does exactly that, because on most songs RH notes are for melody and LH notes are for bass.
piano letters notation and octaves

1 Comments

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  1. [Intro: Hyunsuk, Haruto]
    Hey
    Woo, woo
    Let's go

    [Verse 1: Yedam, Asahi, Mashiho, Jaehyuk]
    Gachi isseul ttae nan stress off
    Amudo moreuneun nae moseup
    Boyeojul su inneun neoneun best of
    Geokjeongeun pass it
    Keep balling, maeil gachi neullyeo kemi
    Siltaraecheoreom eongkyeo inneun urideul
    Haruga neul play the game
    Jiruhal teum eopseo
    Gagetdaneun sigan bonaego whatever urikkiri
    Milly, milly, rock it chumeul chumyeo happiness (Yeah)

    [Pre-Chorus: Jeongwoo, Jihoon, Yoshi, Hyunsuk]
    You can play with me again
    Binjaril chaewojwo neon day by day (Ayy)
    Yeongwonhagil bara truth, the swear (Yosh!)
    Unbelievable maeil nan eomjil chikyeosewo (Ha)
    Jimuneun seontaen hangsang haneul wireul bogo isseo (Ha)
    Mal an haedo ammukjeogin uriui chemistry (Chemistry)
    Igeol eojjae bujeonghanya we're the one, one, one, one

    [Chorus: All, Junkyu, Junghwan, Doyoung, *Yedam*]
    Oh-ayy-oh-ayy-oh
    Best friend forever
    Oh-ayy-oh-ayy-oh (Ooh, ooh)
    Best friend forever (Yeah, yeah, yeah)
    Mugeoun cheoreun urin deulji aneullae (Yeah)
    Gabyeoun misoro gyesok muldeurige (Yeah)
    Oh-ayy-oh-ayy-oh
    *Uri kkirikkiri best friend forever*

    [Verse 2: Junkyu, Junghwan, Hyunsuk]
    Oneul mwo hae myeot sideun gane
    Jamsi eolgurina boja eodideun gane, yeah, yeah
    I'm fine jogeum meoreodo joa
    Uri hamkke handamyeon (7Chill, go)
    Oh, hold on, wait
    Eolgure meokgureum beim
    Bineun wae tto oneunde
    Hommie, gaja, let's go chill
    Dramatichan wiron mothajiman da malman hae
    Jibungeun mot dwaedo usani doeeojul tenikka, everyday

    [Pre-Chorus: Jihoon, Doyoung, Haruto, Hyunsuk]
    I can heal you all day
    Nega jichil ttaemada day by day
    Pyeongsaeng dongan urin truth, the swear (Ruto!)
    Gachi isseul ttaen eodideunji noriteo (teo)
    Gibun jeonhwan jom hago sipeum bulleo, call (Call)
    Neoneun nago naneun neogo gachi utgo ulgo (Hey, hey, hey)
    Jungmagouga ttaro eopda, we are the one, one, one, one (Yeah)

    [Chorus: All, Jaehyuk, Doyoung, Mashiho, *Junkyu*]
    Oh-ayy-oh-ayy-oh
    Best friend forever (Ayy)
    Oh-ayy-oh-ayy-oh (Ayy)
    Best friend forever (Yeah, yeah, yeah)
    Mugeoun cheoreun urin deulji aneullae (Yeah)
    Gabyeoun misoro gyesok muldeurige (Yeah)
    Oh-ayy-oh-ayy-oh
    *uri kkirikkiri best friend forever*

    [Bridge: Jeongwoo, Asahi, Yedam, Jihoon]
    Oh, jeo haneuri muneojyeo naeryeodo
    Meoljjeonghadeon ttangi kkeojindaedo
    Byeonhaji anneun yeongwonhan urin best friend
    Jigeumi gwageoga doeeogado
    Al su eomneun miraega onda haedo
    Kkeuteopsi ieojineun chueogi doeeojugil

    [Refrain: All, Haruto, Hyunsuk]
    Best friend forever
    La, la-la, la, la-la (Hey, yeah)
    La, la-la-la-la (Hey, yeah, yeah, yeah, oh yeah)
    La, la-la, la, la-la (Yeah)
    La, la-la-la-la (Best friend forever)
    La, la-la, la, la-la (Ayy, ayy)
    La, la-la-la-la (Alright)
    La, la-la, la, la-la (Alright, yeah)
    La, la-la-la-la

    [Outro: Jeongwoo]
    Uri kkirikkiri best friend forever

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