As a member of Quiet Riot, from September 1982 to January 1985, Rudy recorded the multi-platinum albums “Metal Health”, the first Heavy Metal debut to reach #1 on the Billboard charts and “Condition Critical”. During this period Rudy headlined worldwide tours, appeared on numerous MTV videos and was voted #1 Bassist in Circus Magazine for 1983.

As a member of Whitesnake, from April 1987 to September 1994, Rudy recorded the multi-platinum album “Slip of the Tongue”. During this period Rudy also performed worldwide on headline tours in support of the multiplatinum “1987” and “Slip of the Tongue” albums and appeared on 6 MTV videos.

As a member of the reunited Quiet Riot, from May 1997 to August 2003, Rudy performed worldwide on headlining tours and as special guests in support of the Quiet Riot CDs “Alive and Well” and "Guilty Pleasure. Rudy also appeared on VH1’s Quiet Riot, Behind the Music. In November of 2003, “Quiet Riot Live in The 21st Century” DVD was released after the group disbanded.

His recordings with all of these artists combined have sold over 30 million copies.

In February of 2004, Rudy joined Yngwie Malmsteen’s Rising Force for the U.S. 30 city “Attack Tour”.

In April of 2004 Rudy became a member of the multi-platinum Heavy Metal group DIO and will be embarking on a worldwide touring beginning in July.

Besides Rudy’s musical accomplishments, he also demonstrated Acid, Vegas and DVD Architect software at the Sony Pictures booth during the 2004 Winter NAMM Show, released the “Acid for Non Linear Editors” training DVD directed by Douglas Spotted Eagle for the VASST training series and created the “Working Man’s Bass” loop library exclusively for Sony Pictures’ Acid Software.