One more request explained by this missing bass part (the only one, so the bass parts is really completely missing):
This missing acoustic bass part in the middle of the song really makes no sense no matter in which style/context, espcecially as there is nothing to take over that part (for example if there would be another bass, a cello whatever) so it would be great if you could add a button on the expert page of the instrument (where dynamic, merge and so on is) to allow silent parts or alternatively simply play threw the whole song ("always playing").
Maybe if you add parts this could be part specific then if possible (so it might make sense to make the bass silence for a bridge part with some pads and long notes staying).