She is the founder of musical group Feral & Stray, Erin Lang & The Foundlings and its earliest inversion The Tail Lights.

[1] She played bass in Canadian bands Jimmy Allen's Ant Farm, and Sixty Six Kicks before starting her own project.

In the summer of 2000, she met the English musician Roger O'Donnell, then keyboard player with The Cure; the two worked together as co-writers on Lang's first album and continue to collaborate on some projects.

[1] In 2005, Lang and O'Donnell formed their own independent record label 99 Times out of 10 with the intention of releasing material by previously unsigned bands.

[8][9] In 2011, Lang began working on her second album Between You And The Sea in the countryside of Quebec Canada in various recording spaces, churches, meeting halls and artists lofts.