Ray Alan Marks & Robert Jackson Marks II, the Brothers Marks, are the Yuri Wirt Experience - named after their great uncle, Yuri Wirt Marks. Yuri's brothers were Toy Doy Marks and Bob & Ray's grandfather, Opal Tim Marks. Yuri Wirt later in life changed his name to Bill. Opal changed his name to Jim. Uncle Toy remained Uncle Toy.

The Yuri Wirt Experience contains joint venture audio work by the Bob & Ray recorded in Cleveland and Seattle.

* a.k.a.