Around this time Haden also played drums and performed backup vocals for Beck on the songs "Totally Confused" and "Steve Threw Up".

Later, Haden became one of the four early members of the band the Rentals, along with Rod Cervera and Weezer's Patrick Wilson and Matt Sharp.

Around this same time, she played bass and performed vocals as a member of The Martinis, along with Pixies guitarist Joey Santiago and his wife Linda Mallari.

In 2001, Haden toured as a backup singer and keyboardist for Jimmy Eat World and is credited on their album Bleed American released that same year.

She continued to make music in the Los Angeles area, including with sister Petra's a cappella choir the Sell Outs and as a member of the most recent lineup of The Rentals.