Complex sentence: The young boys sneak in the back alley of a club to convince Brooke to manage them, He wasn't interested until the boys insisted and broke out into a impromptu a capella version of The Jackson 5's "I Want You Back".
Split into simpler sentences: The young boys sneak in the back alley of a club to convince Brooke to manage them. However, he wasn't interested until the boys insisted and broke out into an impromptu a capella version of The Jackson 5's "I Want You Back".