I'm fairly new to the music creation/production game, so this may be something that is easily fixable. I have a MIDI track in Garageband with a preset from Analog Factory Experience. It sounds great, but after a few minutes that track gets quieter for no reason I can see. Everything else stays the same volume, including other MIDI tracks with presets from AF. I already checked the individual track volumes and the master track, so I can't see any reason this sound should get quieter. It returns to normal once I restart Garageband, so I don't know what's going on. Any help would be greatly appreciated!