Rudy Van Gelder, pioneering jazz recording engineer, dies at 91
Although not a household name Rudy Van Gelder, who has died at the age of 91 in the U.S., is one of the key figures in jazz, helping to shape the sound of jazz over thousands of recordings, many of which are seminal moments in the development of jazz music: John Coltrane's 'A Love Supreme', Lee Morg