The Everly Brothers rock groups of the 1960s. The Beatles, The Beach Boys, and Simon & Garfunkel developed their early styles by performing Everly songs. The Bee Gees, The Hollies, The Marmalade, and other rock and roll groups that feature harmony singing were also influenced by the Everlys. The music of the Everly Brothers influenced the Beatles, who referred to themselves as "the English Everly Brothers" when Paul McCartney and John Lennon went hitchhiking south to win a talent competition. They based the vocal arrangement of "Please Please Me" on "Cathy's Clown." Keith Richards called Don Everly "one of the finest rhythm players."
The Walker Brothers first single, "Pretty Girls Everywhere," had little success, but radio stations picked up on the follow-up "Love Her" with Engel's baritone vocals, and it made the Top 20 in the UK Singles Chart in June 1965. The song had originally been recorded by The Everly Brothers and released as B-side to their single "The Girl Who Sang The Blues" in 1963. Philips then recorded and released the group's version of "Make It Easy on Yourself," a Burt Bacharach and Hal David ballad previously recorded by Jerry Butler. It was sung by Engel (by now called Scott Walker), arranged by Ivor