 In 2007, she sang on the Intramural song "Impairment Begins with the First Drink," from the album "This Is a Landslide" by former Desaparecidos guitarist Denver Dalley.Later that year, Sperber was also a guest vocalist on the Fairmont album "Wait & Hope", and again in their 2008 release "Transcendence".In 2011, Sperber and Neil Sabatino of Fairmont joined to record as Mergers & Acquisitions, releasing an electro-pop EP entitled "Grape Soda".