Claim: The Beach Boys leader was American musician Brian Wilson.
Evidence: 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.
Brian Douglas Wilson -LRB- born June 20 , 1942 -RRB- is an American musician , singer , songwriter , and record producer best known for being the multi-tasking leader and co-founder of the rock band the Beach Boys.