The producer behind some of the Beatles most popular songs and influential albums has passed away. Sir George Martin was 90. Martin produced “Sgt.Pepper’s Lonely Hearts Club Band, “Revolver”, “Rubber Soul” and “Abbey Road”. He also used emerging multi–track technology to produce a new kind of music, from the two-track “Please,Please Me” to the eight-track, “Hey Jude”. For more on this story, Click Here.