[2] The band "maintained utmost secrecy from the start",[3] working under aliases and disguising their faces during recorded shows, including KCRW radio's Morning Becomes Eclectic program[4] and the 2009 South by Southwest festival.

In 2010, the band released Part II: The New December, described by the Los Angeles Times as "screwball pastiche pop [that] sounds like an algebra problem but feels like a come-on.

[7] The music is in a style the band calls "Opera-House", which they describe as "beat-driven electronica with grand, operatic gestures and lyrically-dense storytelling.

[11] In November 2010, Goldman and Loa traveled to Saint Petersburg, Russia, to perform two long-form, constructivist-inspired reworkings of the two studio albums, followed by a workshop and recording session where they invited local musicians (and curious non-musicians) to join them in building a new Fol Chen song.

[13] The band collaborated with Monome, a computer-manufacturing company, in late 2011 to make the Tetrafol, a motion-sensitive pyramidal sound device.