Complex sentence: Charlie has mentioned how, as a child, he would stay awake at night because Uncle Jack would want to sleep in his bed, and Charlie's lyrics to "Nightman" seem to revolve around a man sneaking into his room at night and raping him.
Split into simpler sentences: Charlie has mentioned how, as a child, he would stay awake at night because Uncle Jack would want to sleep in his bed. Coincidentally, Charlie's lyrics to "Nightman" seem to revolve around a man sneaking into his room at night and raping him.