Can't Take My Eyes Off You by Frankie Valli

This was so hard to sing. “Can't Take My Eyes Off You“ is a 1967 song written by Bob Crewe and Bob Gaudio, and first recorded and released as a single by Gaudio's Four Seasons bandmate Frankie Valli. The song was among his biggest hits, earning a gold record and reaching No. 2 on the Billboard Hot 100 for a week, making it Valli's biggest solo hit until he hit No. 1 in 1975 with “My Eyes Adored You“.