Originally published on ProWrestlingSheet.

The singer of D-Generation X's popular theme song has passed away.

According to his obituary, Chris Warren "passed away suddenly" on Sunday.

It's unclear what caused his death at this time, but the funeral will be held this weekend in New York.

Warren recorded a few other themes for WWE as well, including Triple H's famous "My Time" song. He also performed at WrestleMania XIV and created a few tracks for TNA.

The obit also states, "Christopher was very well liked and will be greatly missed by all that knew him."

R.I.P. Chris -- we'll blast this song all day in your honor.