I Marc 4 were an Italian jazz quartet active in the years 1960–1976. The band's name was composed of the names of its members: Maurizio Majorana on the bass (M), Antonello Vannucchi at the organ (A), Roberto Podio at the drums (R), and Carlo Pes on guitar (C).
Their song "Summer in Love" featuring the vocals of Edda Dell'Orso, is featured in the Fallout TV series, Season 1, Episode 6: "The Trap".