While at TMF, he teamed up with Detroit native, producer/engineer Michael Tudor to co-produce a series of recordings of New York rock bands such as The Astrojet (featuring Jody Porter of Fountains of Wayne), Clara Venus and Mikki James.

Together, Feinstein and Tudor co-produced material for the Beatles-based soundtrack to the 2001 drama film I Am Sam, featuring Rufus Wainright and Sean Lennon's "Across the Universe" and Howie Day's "Help!".

During this time, Feinstein also contributed musically to several artists' albums such as Fat Joe's Loyalty, Chantal Kreviazuk's Juno Award-winning Colour Moving and Still, Tim Finn's Say It Is So and Patty Griffin's Flaming Red.

[2] The last album he recorded playing bass guitar was New Zealand artist Gin Wigmore's Holy Smoke produced by Mike Elizondo and engineered by Joe Chiccarelli.

[3] Growing up, Feinstein enjoyed listening to The Clash, Hüsker Dü, The Replacements, David Bowie, The Rolling Stones, The Who and Brian Wilson.