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| Name | Year(s) | Appeared on | Instrument |
|---|---|---|---|
| James Youmans | 1978–1979, 1996 | One Size Fits All, Studio Tan, Sleep Dirt, Läther | Bass, Guitar |
| Graham Young | 1978, 1996 | Studio Tan, Läther | Trumpet |
Read more about this topic: List Of Performers On Frank Zappa Records