You can set the Master Tuning, at least on some sound cards. Find it in Options, GM Settings, Master Tuning.

I assume from your question you want to take a guitar where the top and bottom strings are E, and tune the whole thing down so the top and bottom strings now sound an Eb, but you want to read chords normally as if your guitar was still tuned to concert pitch.

Note: I'm answering this from the Help file, without a computer to try it, so I have no idea what this setting does to RealTracks.


BIAB 2025 Win Audiophile. Software: Studio One 7 Pro, Swam horns, Acoustica-7, Notion 6, Song Master Pro, Win 11 Home. Hardware: Intel i9, 32 Gb; Roland Integra-7, Presonus 192 & Faderport 8, Royer 121, Adam Sub8 & Neumann 120 monitors.