[4] Several videos of the choir's covers of contemporary songs such as "Chances" and "Untrust Us" received media attention and went viral.
As a soprano, she released two albums, The Songs of Louis Vierne (2005) and The Sacred Heart of Nino Rota (2007).
The duo made their first public appearance at the Vatican,[9] where they performed one of their songs as a mass setting, with church organ and choir during a service at St. Peter's Basilica.
[10] During this time, Zeffira appeared in Vogue magazine,[11] and was shot by the photographer Rankin[12] for the cover of Dazed & Confused alongside Bobby Gillespie of Primal Scream.
[19] In April 2013, Zeffira made her American radio debut on NPR's All Things Considered,[20] and later made her Canadian radio debut with a live session on CBC Radio One show Q with Jian Ghomeshi[21] Zeffira is listed as composer, arranger, orchestrator, conductor, musician and soprano on the Cat's Eyes soundtrack (released in February 2015) for the 2014 film The Duke of Burgundy, directed by Peter Strickland.