Complex sentence: As Joyce picks at a blue dahlia flower, the nightclub's music sets off a painful ring in Buzz's head, and lapsing into a fit, he remembers the agonizing music he heard while at Helen's bungalow as she played with a blue dahlia.
Split into simpler sentences: As Joyce picks at a blue dahlia flower, the nightclub's music sets off a painful ring in Buzz's head. Lapsing into a fit, he remembers the agonizing music that he heard at Helen's bungalow, as she played with a blue dahlia.