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Well, Brett says no haha. But if you look at it from an anatomical standpoint, I say no too. Head voice resonates in your head, raising the soft palate narrows that passageway and makes it hard to get into head voice. I think it sounds horrible too, I'm trying it right now, it seems to make my larynx muscles and stuff tense up. I may be doing it wrong, but I say no. I'm sure Cuno will have more information than I do.