One Time

by Justin Bieber
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Learn a simple version, phrase by phrase: the melody, then easy chords.

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Other arrangements of One Time

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Sheet MusicBar NotationSimple SheetLead SheetKaraoke · LyricsEasy NotesFalling Notes
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 — Falling Notes Piano Tutorial

7 people have learned this song

Watch "One Time" by Justin Bieber in falling notes style — like Synthesia. Color-coded notes fall onto the keyboard in real time. Practice left hand, right hand, or both. Key of D, 72 BPM.

Tip: Break this song into sections and master each one separately. The speed control lets you drill difficult passages at any tempo.

Try other practice modes:

BeginnerLead SheetBar SheetSimple SheetKaraoke

About “One Time”

Can I learn "One Time" with falling notes like Synthesia?
Yes — Falling Notes mode shows colored note shapes dropping onto a virtual keyboard, the same visual style as Synthesia or piano-tile games. Each note's column matches the piano key you press. Works for "One Time" with hands-separate practice in D at 72 BPM.
What key is "One Time" by Justin Bieber played in?
One Time is arranged in the key of D on Super Simple Piano. You can transpose to any other key live in the player.
What's the tempo (BPM) of "One Time"?
The arrangement plays at 72 BPM. Use the speed control (10-200%) to practice slower or play faster.
Is "One Time" easy to play on piano?
This is an advanced arrangement. We recommend breaking it into sections and using the speed control to drill harder passages.
Can I download sheet music for "One Time"?
Yes — registered users can download PDF sheet music, plus MIDI and MusicXML files for use in other notation software.
Who composed "One Time"?
"One Time" was originally performed by Justin Bieber. The Super Simple Piano arrangement is simplified for beginner-to-intermediate players.
What other songs by Justin Bieber can I play here?
Try "FALL", "DIE IN YOUR ARMS", "U SMILE". All are in our player with color-coded notes; pick the one matching your level.
Can I practice left and right hand separately for "One Time"?
Yes! Our Top Down mode lets you isolate the left hand (bass clef), right hand (treble clef), or play both together. This makes it easy to master "One Time" one hand at a time before combining them.
What is falling notes style for "One Time"?
Falling notes (also known as Synthesia or piano waterfall) shows color-coded rectangles falling from the top of the screen onto a virtual keyboard. Each note's position matches the piano key you need to press. "One Time" is in the key of D at 72 BPM.