What key is "One Time" in?

"One Time" by Justin Bieber is in the key of G with a tempo of 72 BPM. Difficulty: beginner.

Is "One Time" easy to play on piano?

Yes — this arrangement is rated beginner, meaning it uses simple chord patterns and a manageable tempo. Most beginners can play through it in 1-3 practice sessions using our color-coded notes.

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

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

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

And e ven though (Bb)it’s a strug gle, love is all we got,

so we gon’ keep (F)keep climb in’ to the moun tain top.

Your (Bb)world

is my world,

and my (F)fight

is your fight,

and my (Bb)breath

is your breath,

and your (F)heart…

And now you’re my (Dm)one

love,

my one

heart,

my (C)one

life,

(F)for sure.

Let me tell you one (Dm)time.

I’m a tell you one (C)time.

And I’m a be your (Dm)one

guy, you’ll (Bb)be my num ber one girl,

al ways (C)mak ing time

(F)for you.

I’m a tell you one (Dm)time.

I’m a tell you one (C)time.

I’m a tell you (C)one (Dm)time.

One Time by Justin Bieber

2 people have learned this song

Easy piano arrangement in the key of G at 72 BPM. Difficulty: beginner. 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 G with a tempo of 72 BPM. Difficulty: beginner.
Is "One Time" easy to play on piano?: Yes — this arrangement is rated beginner, meaning it uses simple chord patterns and a manageable tempo. Most beginners can play through it in 1-3 practice sessions using our color-coded notes.
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.