George Martin
Paul McCartney, the most "conventional" (normal) Beatle, worked with Martin several times after the Beatles ended in 1970. John Lennon counted on Martin to turn his sometimes "way-out" ideas into finished records, but he did not always like the way Martin worked, and mostly produced his own solo recordings. George Harrison, the youngest Beatle, found many of his songs and ideas rejected by Martin. Martin later said "I was always rather beastly to George," in trying to make more hit records. Harrison also produced (or co-produced) most of his own solo work. He even built his own recording studio after years of making records at Abbey Road. Martin praised Ringo Starr's "super-steady beat", and the sound his drums gave the Beatles records, but each later worked with other people.