Piano chords · Dreamy ballad
One: piano accompaniment sheet music
- C major
- 4/4
- 90 BPM
- I–vi–IV–I loop
- Medium
Play the full song with sheet music
One written out as piano music: the I – vi – IV – I loop in C major for both hands, with chord names and finger numbers. Press play and follow the cursor. The left hand plays hammering bass (broken chord 8-8), and the right hand sings the tune.
One chord chart
The loop once round, bar by bar, in C major. The roman numeral says the chord's place in the key, so the same chart works in any key.
| Bar | Chord | Numeral | Notes |
|---|---|---|---|
| 1 | C | I | C E G |
| 2 | Am | vi | A C E |
| 3 | F | IV | F A C |
| 4 | C | I | C E G |
What the sheet music shows
The grand staff: the right hand on the treble staff, the left hand on the bass staff, with the chord names above and a finger number on each note (1 is the thumb). It is the accompaniment: hammering bass (broken chord 8-8) in the left hand, with the right hand free for the melody, over the C – Am – F – C chords.
Press play and a cursor follows the music. Above it, Colours paints each note in its key’s colour and Note names writes its letter on its head.
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Questions about One
Does the sheet music for One have finger numbers?
Yes: every note of both hands has its finger number, 1 being the thumb. To read the notes alone, turn Fingers off above the music.
What chords are in One?
The loop is C – Am – F – C (I – vi – IV – I) in C major, and the song ends on Am – F – C.
What key is One in?
C major, at about 90 beats a minute in 4/4.
What does the left hand play in One?
Hammering bass: broken chord 8-8, a medium pattern. It follows the chords, so the same shape works for every bar.
Is One easy to play on piano?
It is a medium one: learn the 4 chords as blocks first, then add the left hand, then the right, slowly.
Made from one arrangement of this song: the left and right hands are the patterns these scores repeat most.