its name comes from the greek god apollo and the frequency of concert pitch — the a note at 440 hz, often denoted as "a440", and the sequential circuits sampler/sequencer, the studio 440. they changed the writing of their name from apollo 440 to apollo four forty in 1996, though they switched back for their latest album. to date, apollo's remixes number around sixty - from u2 in the early 1990s to puff daddy/jimmy page and ennio morricone a decade later. among their stealth sonic orchestra remixes are a series of manic street preachers singles.