Bush spent two years at Banff Centre School of Fine Arts in Canada from 1981 to 1983; there he met Steve Reich and several other musicians who were formative influences for the direction of his career.
He was winner of the 1983 American Piano Awards national competition and made his New York recital debut in 1984 at the Metropolitan Museum of Art.
Other long group associations included a stint from 1992 to 1999 with the classical crossover piano quartet "Typhoon," led by violinist Iwao Furusawa and immensely popular in Japan through the 90s with several top-selling CDs.
In 2001 Bush made his Carnegie Hall solo concerto debut on short notice, replacing an ailing Peter Serkin as soloist with the London Sinfonietta in concerti by Stravinsky and Alexander Goehr to critical acclaim.
Bush's efforts on behalf of contemporary American music have earned him awards and grants from the Aaron Copland Fund and the National Endowment for the Arts.