Mark 56 Records was founded in 1966 by producer and songwriter Bob Crewe, initially focusing on pop and rock music. The label gained prominence in the late 1960s and early 1970s, releasing a series of successful singles and albums. Notable artists associated with Mark 56 include The Four Seasons, whose hits helped define the label's early identity. The label also ventured into other genres, including R&B and soul, showcasing a diverse roster. Throughout the 1970s, Mark 56 experienced fluctuating success, with the rise of disco and changing musical tastes posing challenges. Despite this, it continued to release music until the early 1980s, when it ultimately ceased operations. The legacy of Mark 56 Records is marked by its contributions to the pop and rock genres, as well as its role in the careers of several influential artists, leaving a lasting impact on the music industry during its active years.