Transpose a whole set list without rewriting a single chart
It’s soundcheck. The singer’s voice is tired and three songs need to come down a tone. With paper charts that’s a scramble — someone’s scribbling new chords while the drummer waits. It doesn’t have to be. This guide covers how transposing works when your charts are structured, and how to move a whole set list at once.
Why transposing on paper is painful
On a printed or hand-written chart, a chord is just ink — there’s nothing that knows a G should become an F. So every key change means re-deriving and rewriting every chord, for every song, by hand. Miss one and someone plays a clam on stage.
How instant transposing works
When a chart is written in a structured format like ChordPro, the app knows which parts are chords. Shifting the key is then just maths: move every chord up or down by the same number of semitones, and respell it sensibly (so you get a readable B♭, not an A♯). The lyrics stay put; only the chords move. It happens in a tap, and it’s always correct.
Capo vs. transpose — a quick note
Guitarists often want to see easy shapes while actually sounding in a different key. A good chart app separates the two: transpose changes the sounding key for the whole band, while a capo setting changes only the shapes shown to the player who wants them — without affecting anyone else’s chart. Everyone gets the version that makes sense for their instrument.
Moving a whole set list at once
The real time-saver at soundcheck is transposing more than one song without opening each. The workflow:
- Open the set list for tonight’s gig.
- Adjust the songs that need a new key — the change saves to the shared chart.
- Every bandmate’s copy updates, because they’re all reading the same song, not a personal export.
No reprints, no “which version are you on?”, no clams.
Doing this in aChordion
aChordion transposes any song in one tap and respells the chords cleanly, with a separate per-player capo control so guitarists see easy shapes while the band stays in the sounding key. Because your band shares one song library, a key change is instantly current for everyone — at rehearsal, at soundcheck, or mid-set. Free for solo use, one subscription for the whole band.