Several computer programs have a feature, either in audio or in MIDI, where the program is CONSTANTLY in 'record' mode, no matter what you are doing. If a magic moment strikes while you are doodling or just messing around, even if the program isn't in Record mode, it still buffers the recording, and you can recall it after the fact.

Does anyone think that, at least in MIDI form (I would imagine the ability to cache live audio would be difficult in most arrangers), this would be a useful addition to an arranger' features?

Most modern arrangers have a sequencer that can capture what is being played in it's entirety (apart from audio through the harmonizer!). But you always have to set it up and arm it before it will start recording. Why not just have the thing in permanent background 'record'? That way, no inspired moment would ever get lost... (or really terrible moment, for that matter!)

What do you think?