Complex sentence: On stage and in front of their fans Black Snake are a devil worshipping death metal band, backstage and in private the band members are quiet aand unassumong, and deeply conflicted about the act they have to put on.
Split into simpler sentences: On stage and in front of their fans, Black Snake is a devil worshipping death metal band. However, during backstage and in private the band members are quiet and unassumong, also deeply conflicted about the act they have to put on.