John Fletcher, also known as Ecstasy, of the pioneering hip-hop group Whodini, has died at 56.

No cause of death has been given.

“One Love to Ecstasy of the Legendary #Whodini,” the drummer andTonight Showbandleader wrote.

John “Ecstasy” Fletcher

Credit: Leon Bennett/Getty Images

“This man was legendary and a pivotal member of one of the most legendary groups in hip hop.

This is sad man.”

Wrote Q-Tip of A Tribe Called Quest, “RIP to Ecstasy from Whodini.

One of the most under appreciated voices in hip hop.

Too many hits!”

I tended to be nervous looking at 15,000 fans in front of me every night.

There were 2 MCS that directly mentored my calm that summer.

1 was @RealDougEFresh, the other was Ecstasy of Whodini.

Always there to reassure w advice [and] tips #RestInBeats."