I've made a couple voicebank attempts with my first UTAU and I'm having problems with the way her voice sounds when she sings. It sounds fine in the recordings, but when she's singing it sounds completely different and very raspy sounding. In general it's just unpleasant to listen to. Is this an issue with recording, or could it be that I need to work on the oto? I'm not sure how oto.ini works, so any help would be very appreciated!