Ralphi Rosario has been played over 50 times on NTS, first on 1 July 2013. Ralphi Rosario's music has been featured on 54 episodes.

Ralphi Rosario, aka Ralphie Rosario is a leading deejay in the house music scene. He virtually coined the phrase House Music along with the crew of Chi-Town radio show Hot Mix Five. Through this channel, he was able to blast Chicago's airwaves with the new and exciting sounds of house music for most of the 1980s. In 1987 Rosario released the house music anthem, "You Used To Hold Me," with the vocals of Xavier Gold. The track marked a pivotal point…