Originally from New England, Rozum moved to Berkeley from Arizona, where he played many kinds of traditional and original music with Summerdog and Flying South; and San Diego with the Rhythm Rascals. In 1986, he joined forces with Laurie Lewis as part of the original Grant Street Band. He plays primarily mandolin, but is also an accomplished fiddle, mandola, and guitar player. Rozum has been part of the staff of Bluegrass at the Beach, a music camp held in August on the Oregon Coast led by Laurie Lewis, since 1992.
A long-time fixture on the Bay Area music scene, Rozum is best known for "The Oak and the Laurel," his 1996 Grammy-nominated album of duets with Laurie Lewis. Rozum has also released a solo album "Jubilee" wherein he covers little-known country music by Merle Haggard, The Louvin Brothers and Bill Monroe interwoven with contemporary songs by David Olney and Mark Simos, among others.
- Selvin, Joel (February 14, 2010). "Laurie Lewis garners fans with grace, not glitz". San Francisco Chronicle. Retrieved 24 March 2010.
- "Bluegrass, folk and country". Mail Tribune. April 6, 2007. Retrieved March 24, 2010.
- "For Eugene fans, a little folk music The Williamses and Laurie Lewis..." The Register-Guard. February 20, 2004. Retrieved March 24, 2010.