Warren Klein is an American best known as a former guitarist in The Stooges, in Spring of 1973 , founding member of "The Factory", & member of the Fraternity of Man".
A partial Discography of recordings:

Various Artists Where the Action Is! Los Angeles Nuggets 1965-1968 Guitar

Peter Case Who's Gonna Go Your Crooked Mile? Tamboura

Little Feat Hotcakes & Outtakes: 30 Years of Little Feat Dulcimer, Guitar

Marshall Crenshaw Best of Marshall Crenshaw: This Is Easy Tamboura

Beck Nobody's Fault But My Own Sitar, Tamboura

Beck Mutations Sitar, Tamboura

Beck Mutations (Australia Bonus CD) Tamboura, Siitar

Beck Mutations (Japan Tracks) Tamboura, Sitar

Various Artists All Day Thumbsucker Revisited Guitar (Electric)

Lowell George Lightning-Rod Man Guitar

Movie Soundtrack Echo Park Sitar

Broken Homes Broken Homes Tamboura

Marshall Crenshaw Downtown Tamboura

Kim Fowley I'm Bad Guitar

João Donato A Bad Donato Guitar (Electric)

Peter Case Who's Gonna Go Your Crooked Mile? 2004 Tamboura

Little Feat Hotcakes & Outtakes: 30 Years of Little Feat 2000 Dulcimer, guitar

Marshall Crenshaw Best of Marshall Crenshaw: This Is Easy 2000 Tamboura

Beck Nobody's Fault But My Own 1999 Sitar, Tamboura

Beck Mutations 1998 Sitar, Tamboura

Beck Mutations (Australia Bonus CD) 1998 Tamboura, Sitar

Beck Mutations (Japan Tracks) 1998 Tamboura, Sitar

Various Artists All Day Thumbsucker Revisited 1995 Guitar (Electric)

Lowell George & the Factory Lightning-Rod Man 1993 Guitar, Reverb

Movie Soundtrack Echo Park 1986 Sitar

Broken Homes Broken Homes 1986 Tamboura

Peter Case Peter Case 1986

Peter Case Beeline Tamboura

Marshall Crenshaw Downtown 1985 Tamboura

Peter Ivers Nirvana Cuba 1974 Guitar

Kim Fowley I'm Bad 1972 Guitar

João Donato A Bad Donato 1970 Guitar (Electric)

Fraternity of Man Get It On 1969 Guitar, Sitar, Tamboura
Movie Credits:

Easy Rider

The Main Event

Airplane

Charly

American Pop

Love Potion #9

Taking Woodstock
TV Credits:

F-Troop

Gomer Pyle