For a time, he was part of Dwight Twilley\'s band, as was his sister Susan Cowsill.\n', '

In 2003, he married Vicki Peterson of The Bangles.\n', '

Cowsill began playing with the Beach Boys touring band on keyboards in 2000. He moved to the drums in 2008. His solos for the concerts include "Wild Honey," and "Sail On, Sailor." In 2011, Cowsill was confirmed to be performing alongside The Beach Boys on their 50th Anniversary Reunion Tour. Cowsill appears on the band\'s subsequent studio album, That\'s Why God Made the Radio (2012). He also performed on Mike Love\'s solo albums Unleash the Love (2017) and Reason for the Season (2018).\n', '

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