It would be really nice if the Pyramid actually supported a note length of “infinity” for drones. When a note is infinite, the note on event would trigger immediately whenever the first of these condition happened: Playback Start, Track is UnMuted, Pattern Becomes Active. Then the note off event would only trigger with the first of the following: Playback Stops, Track is Muted, Patterns is inactive.
A real drone is a note (or notes) that is sustained for a very long time. This is not the same as a seamless repetition of a note that loops every bar, even if you can sometime use evelope settings that minimize the pop the the note gets repeated