How do i transpose.. say the progression by 1 step down and retain the same visuals ?
for example
i have a progression in G.. and after transposing I just want it to SOUND one down
instead it reads F# ....
because I want to read same chords while playing one down on guitar
if you "interface as a sort of sheet music interface "
chord poly pad can do what you are asking and can be assigned to Midi if you have lots of buttons ( but cant do play next)
Navichord has auto play , so you can see in G, and with a third party app you can increase scale sound by 2
Onsong can do what you looking and can midi assign , if your song has 3 or 4 chords only.. very rudimentary though