Occasionally there is a long sound

If I choose a, B or C, then I play with a MIDI keyboard. Occasionally there is a long sound. Only if a, B or C is turned off. Is that where I set it?

You are experiencing “hanging note”. Unfortunate result of note clashing when using midi keyboard (especially small keyboard ie 25, 32). Happens when one:

  • accidentally presses 2 green keys (chords) that play one or more of same notes
  • doodles with melody and same note is played at the same time by green key and “melody hand”

Used to happen to me quite a lot in the past but now, with last version of Scaler, it’s rare.