Proznick was born in
Surrey, British Columbia. She began playing double bass at thirteen and was taught by her father, musician and educator David Proznick. While attending
Semiahmoo Secondary School, she won the General Motors Award of Excellence in 1993. She attended
McGill University from 1993 to 1998, where she met her future bandmates: drummer Jesse Cahill, tenor saxophonist
Steve Kaldestad, and pianist Tilden Webb who she married in 2004. While in
Montreal, she worked with
Christine Jensen,
Kelly Jefferson,
Ranee Lee,
André White, Greg Clayton, and other prominent Montreal jazz artists. She was a winner of the
IAJE Sisters in Jazz Competition in 1998. Proznick moved to
Vancouver in 2000, where she and Webb became leading members of the Vancouver jazz scene and the Cellar Music record label. Proznick won Bassist of the Year at the National Jazz Awards in 2008 and 2009.
Sun Songs features her quartet alongside vocalist
Laila Biali. The album earned Proznick her second Juno nomination in 2019 for Vocal Jazz Album. Two albums centered around ancestry and cultural backgrounds,
Roots and
Wings, followed in 2025. The Ostara Project has featured musicians such as
Allison Au,
Rachel Therrien,
Jocelyn Gould, Sanah Kadoura, Joanna Majoko, Valerie Lacombe, Laila Biali, Shruti Ramani, Emilie-Claire Barlow, Dawn Pemberton, Terri-Lynn Williams-Davidson, Virginia MacDonald,
Marianne Trudel and Kim Zombik. Proznick is a member of Four Jays, a contemporary chamber ensemble, and Jasmine Jazz, a collaboration with the
Vancouver Chinese Music Ensemble, both of whom have been nominated for
Western Canadian Music Awards. She is a member of the Indo-Jazz fusion quartet Raagaverse, whose 2024 debut album
Jaya earned Proznick her fourth Juno nomination. She has been featured on over 40 recordings as a side person. Proznick is the Director of Jazz Studies at the
VSO School of Music. She has been a guest adjudicator and clinician at festivals, colleges, universities, and conferences across Canada, such as the
Banff Centre for Arts and Creativity. ==Awards and honors==