Back in the early 1960's, four brothers who wanted to be The Beatles formed a band called The Cowsills. The original Cowsills consisted of John on drums, Bill on guitar, Bob on guitar and organ, Barry on bass.
The Cowsills enjoyed great success during the late 60's and in to the very early 70's not only with their music but appearing as guests on many TV shows and even hosting their own TV special.
— from The ...   Cowsills.com  

Chris Farmer, the Beach Boys' bass player, called me one night— midnight, to be closer to the truth — asking if I would hop on a plane the next morning to fill in at the last minute for Mike Kowalski. Mike had developed an inner-ear infection and couldn't go back up into the high elevation where the band was going to play. So, I did a couple of gigs on drums and sang a little with them.

Following those gigs, the Beach Boys asked me if I was available to substitute for Adrian Baker after Christmas (2000), and on into the New Year (2001). I came prepared to play guitar and sing, but when I got there, I found that Scott Totten had also been asked to fill in for Adrian. Well, it was a good thing Scott was there, because he plays the hell out of that guitar! Compared to him, I suck on the guitar, so I just played percussion and sang back-up.

Next, I got a call from the Beach Boys to play at President Bush's inauguration. I played guitar and percussion for that gig, then went home.

In July 2001, they called me to sub for Beach Boys band member Philip Bardowell, who suggested I fill in for him while he was taking some time off during the Beach Boys European tour. While I was learning all of Philip's parts, the Beach Boys’ management called to ask if I played piano. When I said, "Why yes I do," they told me I would be playing piano for the rest of the tour. Then, I “crammed for exams,” learning everything on piano!

During that tour, I was hired full-time… and I'm still learning how to play that dang piano!

1.  We all have two choices ..... Love ... or Fear.