Alan Ray Hacker OBE FRAM (30 September 1938 – 16 April 2012) was an English clarinettist, conductor, and music professor.
[1] He became a professor of the Royal Academy of Music in 1960 and went on to found the Pierrot Players in 1965 along with American pianist Stephen Pruslin and Harrison Birtwistle.
He was one of those credited with reviving the basset clarinet, and in 1967, he restored the original text of Mozart's Concerto and Quintet.
He played them on an instrument modelled on that for which Mozart originally wrote them, the Stadler's extended basset clarinet.
Hacker also branched out into conducting opera, where he led performances of works from Monteverdi's Ulisse to Birtwistle's The Io Passion.