I Marc 4 has been played over 30 times on NTS, first on 11 July 2018. I Marc 4's music has been featured on 26 episodes.

The name I Marc 4 (or Marc 4) comes from the initials of their members: Maurizio Majorana (bass), Antonello Vannucci (Hammond/piano), Roberto Podio (drums/percussion) and Carlo Pes (guitar). Sometimes 'A' stood for Armando Travaioli, the Italian soundtrack composer. I Marc 4 played and recorded most of Armando Travaioli's compositions. I Marc 4 were best known for their funky Italian soundtrack style. They also played and record with well known Italian composers like Ennio Morricone and Piero Umiliani.