What key is "One Time" in?

"One Time" by Justin Bieber is in the key of Bb with a tempo of 140 BPM. Difficulty: very_easy.

Is "One Time" easy to play on piano?

This arrangement is rated very_easy. It requires comfort with chord shapes and basic hand independence. Expect 1-2 weeks of regular practice for a confident performance.

Can I play "One Time" without reading sheet music?

Yes. Our player offers a falling-notes mode (Synthesia-style) and a beginner mode with color-coded keys — both let you play along without reading traditional notation.

How long does it take to learn "One Time" on piano?

1–3 short practice sessions for the basics; 2–3 weeks to perform confidently with both hands.

What other songs by Justin Bieber can I play here?

Try "FALL", "DIE IN YOUR ARMS", "U SMILE". All are available in our player with color-coded notes; pick the one matching your level.

Lyrics

Ay, ay, ay, ay, ay, ay, ay, ay.

Me plus you.

(Csus)Me plus you.

(Dm)Me plus you.

One time,

one (F)time.

When I met you, girl, my (Bb)heart went knock knock.

Now them but ter flies in (F)my stom ach won’t (F)stop stop.

E ven though it’s a (Bb)strug gle, love is all we got; so we gon’ keep keep (F)climb in’ to the (F)moun tain top.

Your world is my world, and my fight is (C)your fight, and my breath is your breath, and your heart...

And (C)now you’re my (Dm)one love, my (Bb)one heart, my (Csus)one life for (F)sure.

Let me (C)tell you one (Dm)time,

I’m a tell you one (Csus)time.

(C)I’m a be your (Dm)one guy; you’ll be my (Bb)num ber one girl, al ways (Csus)mak ing time for (F)you.

I’m a (C)tell you one (Dm)time,

I’m a tell you one (Csus)time:

girl I (F)love you.

You look so deep; you (Bb)know that it hum bles me.

You’re by my side, them (F)trou bles, them not (F)trou ble me.

Man y have called, but the (Bb)cho sen is you.

(C)What ev er you want, shaw ty, I (F)give it (F)to (Dm)you.

Your world (CN.C.)Shaw ty right there; she’s got ev ’ry thing I need.

I’m a tell you one time (one time), give you ev ’ry thing you need,

down to my last dime.

(Dm)She makes me (Em)hap py.

(F)I know where (Gm7)I’ll be: (Dm)right by your (Bb)side; ’cause (C)she is the (F)one.

(C)Girl, you’re my (Dm)one love, my (Bb)one heart, my (C)one life for (F)sure.

Let me (C)tell you one (Dm)time,

I’m a tell you one (Csus)time.

(C)I’m a be your (Dm)one guy; you’ll be my (Bb)num ber one girl, al ways (C)mak ing time for (F)you.

I’m a (C)tell you one (Dm)time,

I’m a tell you one (Csus)time:

girl, I (F)love you.

And (Dm)me plus you,

(Csus)me plus you,

(Dm)me plus you,

one time,

one time.

One Time by Justin Bieber

2 people have learned this song

Easy piano arrangement in the key of Bb at 140 BPM. Difficulty: very_easy. Color-coded notes — no sheet-reading skill required.

About “One Time”

What key is "One Time" in?: "One Time" by Justin Bieber is in the key of Bb with a tempo of 140 BPM. Difficulty: very_easy.
Is "One Time" easy to play on piano?: This arrangement is rated very_easy. It requires comfort with chord shapes and basic hand independence. Expect 1-2 weeks of regular practice for a confident performance.
Can I play "One Time" without reading sheet music?: Yes. Our player offers a falling-notes mode (Synthesia-style) and a beginner mode with color-coded keys — both let you play along without reading traditional notation.
How long does it take to learn "One Time" on piano?: 1–3 short practice sessions for the basics; 2–3 weeks to perform confidently with both hands.
What other songs by Justin Bieber can I play here?: Try "FALL", "DIE IN YOUR ARMS", "U SMILE". All are available in our player with color-coded notes; pick the one matching your level.