Complex sentence: Influenced by psychedelic drugs, Brian turned inward and probed his deep-seated self-doubts and emotional longings; the piece did not address the problems in the world around them, unlike other psychedelic rock groups.
Split into simpler sentences: Influenced by psychedelic drugs, Brian turned inward and probed his deep-seated self-doubts and emotional longings. The piece did not address the problems in the world around them, unlike other psychedelic rock groups.