Stephen Marco DellaGrottaglia Rezza (born November 3, 1993), is an American singer, songwriter and record producer from Los Angeles, California. He is known for his work with a variety of musicians, including Drake Bell, Sanjoy, Mike Taylor, and Christina Grimmie

He dated singer and actress Christina Grimmie up until her tragic passing in June 2016. His upcoming album Songs for Christina is dedicated to her; the lead single “Hardmode” was released on April 10, 2020.