Mulholland is a member of Great Lake Swimmers,[1] Belle Starr,[2] and The Rattlesnake Choir as well as the founder and lead singer for the Roaring Girl Cabaret.

She makes select appearances in the violin show Bowfire,[3] and has played fiddle with Jim Cuddy, John Borra and Justin Rutledge, among others.

She was a member of the Canadian cast of Barrage and was the vocal and fiddle soloist for the Irish dance show Spirit of Ireland and Celtic Blaze.

Mulholland can be heard on records by Justin Rutledge, Sarah Slean, NQ Arbuckle and Kevin Quain, and her debut album for The Roaring Girl Cabaret is titled In Last Night's Party Clothes.

On May 13, 2014, Mulholland released her debut solo album Whipping Boy produced by multi-instrumentalist Sean Watkins (Nickel Creek) on her own boutique label Roaring Girl Records.