The Four Freshmen is an American vocal group formed in 1948, known for their unique blend of jazz and pop music. The group originally consisted of four members: Bob Flanigan, Ross Barbour, Don Barbour, and Ken Albers. They gained popularity for their tight harmonies and innovative arrangements, influencing many artists in the vocal genre. Over the years, The Four Freshmen have undergone several lineup changes but have maintained their signature sound. They are celebrated for their contributions to music, including hits like "It's a Blue World" and "Graduation Day." Their style has inspired various musicians, including The Beach Boys and The Manhattan Transfer.