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 Everly Brothers they had hits in the United States and the United Kingdom, the biggest being "Wake Up Little Susie," "All I Have to Do Is Dream," "Bird Dog," and "Problems." The Everlys, though they were largely interpretive artists, also succeeded as songwriters, especially with Don's "(Till) I Kissed You," which hit No. 4 on the US pop charts. The brothers toured with Buddy Holly in 1957 and 1958. According to Holly's biographer Philip Norman, they were responsible for persuading Holly and the Crickets to change their outfits from Levi's and T-shirts to the Everlys' Ivy League suits. Don said Holly wrote