The Australian Brandenburg Orchestra is the leading early music ensemble in Australia. 
 It was proposed by Paul Dyer, a leading harpsichordist and early music scholar, with a debut planned for the Sydney Opera House's summer Mostly Mozart Festival of January 1990. Dyer assembled leading early instrument specialists and began intensive rehearsals in 1989 for their debut. 
 The debut was a success and established Australia as having joined the international "authentic" performance movement. Within the first ten years of its existence, it gained a reputation as being among the ranks of leading early music orchestra groups. Paul Dyer has remained its Artistic Director. 
 The Brandenburg (named, of course, after Johann Sebastian Bach's famous set of six Brandenburg Concertos) immediately came into demand. It appeared in the Sydney Festival in 1991-1994 and 1998-1999 and at the Melbourne International Festival of the Arts in 1995. It has appeared with such artists as singers Yvonne Kenny, Graham Pushee, Emma Kirkby, and Derek Lee Ragin, and Australian-born early music violinist Elizabeth Wallfisch. 
 It first performed as an opera orchestra in 1993, playing in Monteverdi's L'Incoronazione di Poppea with The Australian Opera in the Sydney summer season. In 1994 it was described by a newspaper critic as "Australia's hottest orchestra."