Just like most of us mere mortals, superstars came from humble backgrounds, with mums and dads who bragged and worried about them every day. Assigned to take portraits of the artists at home with their sweetly square folks, photographer John Olson traveled everywhere from the suburbs of London to Brooklyn to the San Francisco Bay Area, capturing in his work the love that bridged any cultural divide that may have existed between his subjects. Now, as a special treat for Mother's Day,LIFE.com brings back Olson's nostalgia-inducing photos — check out the awesome '70s decor! — and talks with the photographer himself about his memories of those shoots. Pictured: Mothers of Invention frontman Frank Zappa in his eclectic Los Angeles home with his cat, his dad Francis, and his mom Rosemarie.
Click here to see more brilliant photography at Life.com