influenced by Freak Out! AllMusic states that the first wave of art rock musicians were inspired by Sgt. Pepper's and believed that for rock music to grow artistically, they should incorporate elements of European and classical music to the genre. Many British groups flowered in the album's wake; those who are listed in Music in American Life include the Moody Blues, the Strawbs, Genesis, and "most notably", Pink Floyd. The band's Roger Waters later stated that both Sgt. Pepper and Pet Sounds "completely changed everything about records" for him. 1970s–1990s Art rock's greatest level of popularity was in the early 1970s through British artists including King Crimson and Queen. Early in the decade, Pink Floyd released Atom Heart Mother, with the 23-minute title track taking up the entire first side of the LP. This experiment with collaborator Ron Geesin yielded the longest unbroken Pink Floyd song on record, a suite divided into six parts, which required the band at times to utilize a choir and brass section on tour. The album was a commercial success, giving the band to its first number one record in the UK. It signaled a shift in their music from the psychedelic forays of their late '60s albums and into a period of renewed creativity in the form of longer and more progressive rock music. Enthusiasm for art rock explorations waned in the mid 1970s. From then to the 1990s, art rock was infused within various popular music genres. Encyclopædia Britannica states that its genre's tendencies were continued by some British and American hard rock and pop rock artists, and that Brian Eno's late 1970s and early 1980s collaborations with David Bowie and Talking Heads are exemplary of "the successful infusion of art rock tendencies into other popular music genres". Bowie and Eno collaborated on a series of consecutive albums called the "Berlin Trilogy", characterized as an "art rock trifecta" by Consequence of Sound, who noted that at the time of their release, "The experimental records weren’t connecting with audiences on the scale Bowie was used to. ... New Wave had exploded, and a generation of Bowie descendants had taken the stage." In the 1980s, a new generation of English art rockers took the place of 1970s bands such as Roxy Music, Yes, Genesis, Jethro Tull and Emerson, Lake & Palmer. Journalist Roy Trakin says: "Of course, these stalwarts can still fill Madison Square Garden