The Four Seasons are an American rock and pop band who became internationally successful in the mid-1960s. The Vocal Group Hall of Fame has stated that the group was the most popular rock band before the Beatles. Since 1970, they have also been known at times as Frankie Valli and the Four Seasons. In 1960, the group known as the Four Lovers evolved into the Four Seasons, with Frankie Valli as the lead singer, Bob Gaudio (formerly of the Royal Teens) on keyboards and tenor vocals, Tommy DeVito on lead guitar and baritone vocals, and Nick Massi on bass guitar and bass vocals. source: http://en.wikipedia.org/wiki/The_Four_Seasons_(group)
During the 1950s, they recorded R&B material as the Four Lovers and as Frankie Valli & The Romans. “Bermuda” and “Spanish Lace” were the first two sides released by Frankie Valli’s vocal group calling themselves the Four Seasons. Recorded and released near the end of 1961, these two songs garnered the Four Seasons enough of a following to ignite their career.