In 1967 Atherton was founder of the
London Sinfonietta and, as its music director, a position he held until 1973, gave the first performance of many important contemporary works. It is now widely regarded as one of the world's leading
chamber orchestras. Also in 1967 he was invited to join the music staff of the
Royal Opera House,
Covent Garden, by
Sir Georg Solti. In 1968 he became the youngest conductor ever to appear there, conducting
Il trovatore. He spent twelve years as resident conductor, giving over 150 performances. Also in 1968 he was the youngest conductor in the history of the
BBC Proms and subsequently appeared in thirty consecutive seasons. In 1976 he conducted for the first time at
La Scala in
Milan,
Italy. In 1978 he conducted at the
War Memorial Opera House in
San Francisco, California. Then in 1980 he was appointed music director of the
San Diego Symphony, a post he held until 1987 and principal conductor of the
Royal Liverpool Philharmonic. In 1989 he founded the
Mainly Mozart Festival in
San Diego and was appointed music director of the
Hong Kong Philharmonic Orchestra, a post he held until 2000. In recognition of his services to the music of
Hong Kong, he was appointed an Officer of the
Order of the British Empire and awarded the title of Conductor Laureate of the orchestra. He has also been the principal guest conductor of the
BBC National Orchestra of Wales and the
BBC Symphony Orchestra. He has also devised and conducted festivals in London featuring the complete works of
Maurice Ravel,
Igor Stravinsky,
Anton Webern and
Edgard Varèse with the London Sinfonietta,
London Symphony Orchestra, BBC Symphony Orchestra and the Royal Opera House. He has also appeared with the
English National Opera,
Canadian Opera Company and
Glyndebourne Festival Opera, as well as the
Metropolitan Opera in
New York City, to which he returns regularly. He also returns to
California each summer to direct the Mainly Mozart Festival. He has opened the
Prague Spring International Music Festival and the
Berliner Festspiele with the
Berlin Philharmonic, and travels widely, in particular to the United States where he regularly visits many of the leading
North American orchestras. ==Recorded work and awards==