Frankie Valli, born Francis Stephen Castelluccio on May 18, 1934, in Newark, New Jersey, is an iconic figure in American music, best known as the lead singer of The Four Seasons, one of the most successful and enduring bands of the Rock and Roll era. Valli's career spans over seven decades, marked by his distinctive falsetto vocals and a string of hits that have cemented his status as a musical legend. In the 1960s, The Four Seasons, with Valli as the frontman, dominated the charts with classics like "Sherry," "Walk Like a Man," "Big Girls Don't Cry," and "Can't Take My Eyes Off You," showcasing Valli's emotional range and the group's harmonious sophistication. Their sound, often described as a blend of doo-wop and harmony-driven pop, influenced numerous artists across generations, earning them a place in the Rock and Roll Hall of Fame. Valli's solo career also flourished, with his 1972 album "Big Girls Don't Cry!...Hits and Favorites" becoming a multi-platinum success. His soulful voice and the vulnerability he brought to each performance resonated not only with the original baby boomer audience but also with younger generations who discovered his music through films like "Grease" (1978), where "December, 1963 (Oh What a Night)" became a new anthem for the times. Throughout the years, Valli has maintained a relentless touring schedule, bringing his inimitable sound to audiences worldwide. His artistry and tenacity have been celebrated not only through music but also on Broadway with the Tony-winning musical "Jersey Boys," which chronicles The Four Seasons' story and Valli's life, highlighting his profound impact on American popular music and his indelible place in the annals of rock and roll history.