Premise: The Beach Boys . The group 's original lineup consisted of brothers Brian , Dennis , and Carl Wilson ; their cousin Mike Love ; and their friend Al Jardine . The group , led by their principal songwriter and producer Brian , pioneered novel approaches to popular music form and production , combining their affinities for jazz-based vocal groups , 1950s rock and roll , and black R&B to create their unique sound .
Hypothesis: Brian is a member that plays a musical instrument in The Beach Boys.
Label: NEUTRAL