Described as "fearless" by Yo-Yo Ma in an interview with South China morning post, Australian born Rachel Siu has been making her mark all around the world. She completed both her Bachelor of Music and Master of Music degrees under the esteemed mentorship of Joel Krosnick at The Juilliard School, where she was a Kovner Fellow, and a recipient of the William Schuman Commencement Prize for outstanding leadership and achievement during her time at Juilliard. Her previous teachers include Peter Rejto and Susan Blake.

Rachel’s career as a soloist commenced with a debut at the Sydney Town Hall at the age of seven. Since then, she has been internationally sought after as both a soloist and chamber musician, soloing with numerous orchestras, including the Guangzhou Symphony Orchestra, and The Juilliard Orchestra, working under the baton of conductors such as Thomas Adès, and Long Yu. She has frequented as a performer in venues such as Carnegie Hall, Elbphilharmonie, Sydney Opera House, Alice Tully Hall, Xinghai Concert Hall, Royal Albert Hall, and the Musikverein.

Rachel is also a recipient of many awards, more notably the Gold Medal prize at the VIII David Popper International Cello Competition in Hungary, and was the winner of The Juilliard School concerto competition in 2017. She was also a prize winner in the IX Carlos Prieto International Cello Competition in Mexico.

Currently, Rachel is a recipient of the AMF Richard Bonynge Award. She is on the faculty at the Sydney Conservatorium of Music - University of Sydney, and is a part of Australia's own renowned Streeton Trio.