Transpose chords
Paste the text with chords and choose how many semitones to go up or down: the chords are transposed.
What it's for
To change a song's key and fit it to your voice or capo: paste the chords (e.g. C, Am, F, G) and shift them all by one or more semitones.
How it works
Only the chords (the letter with any maj/m/7…) are recognized and transposed. The rest of the text stays unchanged. +1 goes up a semitone, -1 down.