You may not know his name, but his contributions to the music industry are lengthy and impressive. The Hollywood Reporter has a great article about one of the giants of the business.
One paragraph from that article gives you a good taste of what he did...
"Among the albums on which he worked were Streisand’s 1967 live A Happening in Central Park; Paul & Linda McCartney’s Ram (1971), sandwiched between the Beatles and Wings eras; Dylan’s aching Blood on the Tracks (1975); Simon’s pop classic Still Crazy After All These Years (1975); Billy Joel’s critical and commercial breakthrough The Stranger (1977); Sinatra’s last-gasp Duets (1993), a model of technical wizardry; and Ray Charles’ final album, the mega-selling Genius Loves Company (2004)."
He passed away this weekend at the age of 79.