Crossin founded the Adelaide Chamber Singers in 1985,[REF] and as director he has toured with them to Britain, Europe, North America and South-East Asia, won several awards for performance and CD recordings, and represented Australia in international choral and music education symposia and festivals.
In 2008, the recording of Symphony No. 4 "Star Chant" by Ross Edwards and Fred Watson with the Adelaide Chamber Singers under Crossin's direction won the prize for Vocal or Choral Work of the Year in the APRA Music Awards of 2008 [REF].