He has worked with many artists including Pete Yorn, Stone Sour, Joseph Arthur and Coheed and Cambria.

After graduating from Fairfax High School, he continued to play in various bands, and he took session work in recording studios.

[3] Around 1989, Jakob Dylan and his friend Tobi Miller formed a group called the Apples, playing various clubs in the L.A. area.

They served as the opening act for Cracker, the Spin Doctors and 10,000 Maniacs, and they started headlining their own shows.

[3] Other labels were not interested in signing the band, and Jaffee filled his time by playing gigs with El Vez as well as taking more session work.

Because of this, in 1996 he was credited on albums by Rickie Lee Jones, the Hookers, Leah Andreone and Chalk FarM.

That same year, he performed session work with Everclear, Grant Lee Buffalo, Richie Sambora, Macy Gray, Jeremy Toback, Joe Henry, Melissa Etheridge, Ramsay Midwood and Garth Brooks.

The Sound City Players consisted of a rotating number of artists including Grohl, Jaffee, Stevie Nicks, Alain Johannes, Paul McCartney, Rick Springfield, Josh Homme, Trent Reznor, Krist Novoselic and more.