Morty Nevins, born Morton Tepper on May 26, 1917, in Washington, DC, was an influential American accordionist and composer, best known as a founding member of the pop group The Three Suns. Alongside his brother Al Nevins on guitar and cousin Artie Dunn on organ and vocals, Morty helped form the group in 1939. The Three Suns gained popularity in the 1940s and 1950s with hits like "Twilight Time" and "Peg o' My Heart," selling millions of records.

Morty Nevins was credited with writing the group's signature song, "Twilight Time," which became a major hit and was later covered by The Platters with added lyrics by Buck Ram. The group was known for their innovative use of instruments and stereophonic effects, making them a favorite in the lounge music and exotica genres.

After the original group disbanded in the late 1950s, Morty continued to compose music, creating songs such as "These Things I Offer You for a Lifetime" and "Lovers’ Gold." He retired from performing live in 1954 but remained active in the music industry as a composer and arranger.

Morty Nevins passed away on July 20, 1990, in Beverly Hills, California, at the age of 73, after a brief battle with cancer. His contributions to music, particularly through The Three Suns, left a lasting impact on the pop and lounge music scenes of his time.