Polenzani performed as part of Voices on the Verge, a collaborative musical project with Beth Amsel, Jess Klein, and Erin McKeown. Voices on the Verge toured together in 2001 and 2002 and released a live album, Voices on the Verge: Live In Philadelphia on the Rykodisc label. In 2004, Polenzani toured with Sharon Lewis of the British band Pooka, whom she cites as a major musical influence.
