1964, beginning a run of single and album sales (ten million over 12 months), the group for a time challenging The Beatles in popularity in the United States. His down-to-earth handling of the band, his business acumen and knack for selecting hit singles, established Most as one of the most successful producers in Britain and kept him in demand throughout the 1960s and 1970s. In July 1964, Most scored another top 10 hit with the Nashville Teens' remake of the John D. Loudermilk song "Tobacco Road". In September 1964, with Most at the control board, Brenda Lee recorded "Is It True" and "What'd I Say". "Is It True" was released in England and later in the US, and it became a hit and a gold record. "What'd I Say" became another hit throughout Europe but was never released in the US. Most had equal success with other artists for whom he produced chart-topping albums and singles between 1964 and 1969, notably Donovan with "Sunshine Superman", "Mellow Yellow", "Jennifer Juniper", and Lulu's hits "To Sir, with Love", "The Boat That I Row", "Boom Bang-a-Bang" (which finished equal first in the 1969 Eurovision Song Contest), "Me the Peaceful Heart", and "I'm a Tiger". Most also produced the final studio single of the 1960s by The Seekers, "Days of My Life", in 1968, and Nancy Sinatra's "The Highway Song" in 1969. Additionally in the 1960s, Most signed and produced artists such as singer-guitarist Terry Reid, and all-girl rock band The She Trinity. Most's productions were backed by London-based session musicians including Big Jim Sullivan and Jimmy Page on guitar, John Paul Jones on bass guitar and arrangements, Nicky Hopkins on piano, and Bobby Graham on drums. He produced Jeff Beck's hits "Love is Blue" and "Hi Ho Silver Lining" and the Jeff Beck Group albums Truth and Beck-Ola. By 1967, after commercial and critical failure of The Yardbirds album Little Games, he decided to steer clear of rock groups. The Yardbirds objected to his insistence that every song be cut to three minutes and that albums were an afterthought following the singles. His focused approach also led to a split with Donovan in late 1969. Most and Donovan reunited in 1973 for the album Cosmic Wheels on which Most was credited under his real name, Michael Peter Hayes. From 1968 to 1983 Despite these setbacks, Most set up his own production office at