Playback plays random deep bass notes loud

[Andro]

Out of interest, this is the same sort of issue discussed here:

Weird note at start of playback

Daniel will know far more about the Halion SE library than me as I hardly ever use it but I’m sure that @Janus is right here with the mismatch. You are using an expression map for the HSSE Nylon Guitar VX which appears to be an acoustic guitar but the actual instrument you have chosen is an electric guitar GM 030 overdrive. Which instrument do you actually want to use? A GM instrument such as you have chosen does not generally require an Expression Map so if you want that you must change the E…

MIDI keyswitches are usually low bass notes. A trap and a pitfall for the unwary!