A native of Edmonton, Canada, Neumann's foray into the jazz arena began with the release of First Time Out in 2004 which she recorded with the Grant McEwan Jazz Band, an official outfit of the University of Alberta. From there, Neumann became the lead vocalist for the Rodney Whitaker's Jazz Band at Michigan State University and went on to perform at the 2006 Detroit Jazz Festival, SXSW Festival and several Canadian Folk Festivals. Steadily, Neumann generated recognition as a jazz vocalist with the class and spunk that her brethren could admire and emulate. "Instead of being in love with the vibe of a forgotten sound from years ago, Neumann is doing what any self respecting artist should do and that is push the music forward." (B. Black, Critical Jazz)
In November of 2018 Thea relocated with her son to the Lakes District area of beautiful Northern BC. A lifetime's worth of events squeezed into just a few years opened up a channel of beautiful, fierce and heart-breaking songs that Thea will be releasing in the Spring of 2023.