If you use the Big Lyrics window it will scroll the lyrics and chords in a simple fashion. This will eliminate the need to double them up. Works great! The Key change i am not sure of. I have never changed keys during a performance before. If i am playing with different people i request a lead sheet from them with chords and the Key info upfront not after i am in front of an audience. I practice in advance and do not want to change chords on the fly just seems to muddle stuff up.

HP Win 11 12 gig ram, Mac mini with 16 gig of ram, BiaB 2025, Realband, Reaper 7, Harrison Mixbus 9 32c , Melodyne 5 editor, Presonus Audiobox 1818VSL, Presonus control app.