Irv Gotti, the music producer who created hits for Ja Rule, Ashanti, DMX and Jennifer Lopez, has died at the age of 54. Best known as the founder of the record label Murder Inc., his signature style of blending hip-hop beats with smooth R&B melodies shaped the sound of the charts in the late 90s and early 2000s.

Irving Lorenzo Jr.—known to the music world by his professional name, Irv Gotti—has died. Through his work, first for Def Jam Records, and then as the co-founder (with his brother Chris) of Murder Inc.