Jeff Mattson Jeff Mattson (guitar, vocals) is a master of eclectic styles. Lead guitarist for Dark Star Orchestra, and the Donna Jean Godchaux Band with Jeff Mattson. Jeff is a founding member of the legendary jam band, The Zen Tricksters. Jeff has been a student of the Jerry Garcia style of guitar playing since with early 1970s. Jeff, a veteran of over 30 years on the road, is a guitar wizard whose playing ranges from rock & roll to blues, bluegrass, country, jazz, and folk, with a healthy dose of psychedelia. Jeff is also a strong original songwriter and his work is prominently featured on five original albums, including several pieces co-written with bandmate Donna Jean Godchaux and one with Rob Barraco