“Has anybody ever heard of Bob Ezrin???” he tweeted.

Add more names to Kanye West’s growing list of feuds: Bob Ezrin and the Grammys.

You know what the Grammys are.

But who’s Bob Ezrin? That’s what West wanted to know, too.

“Has anybody ever heard of Bob Ezrin???” he tweeted.

Well, yes. Bob Ezrin is best known as the producer of such albums as Pink Floyd’s “The Wall,” Alice Cooper’s “Billion Dollar Babies” and Kiss’ “Destroyer.” And he doesn’t think much of Kanye West.

“Sure, he made some great music for himself and others,” Ezrin wrote in an essay for the music industry blog The Lefsetz Letter. “But in spite of what the aspirationally-cool media keeps saying about him, unlike other creators in his genre like Jay-Z, Tupac, Biggie or even M.C. Hammer for that matter, it’s unlikely that we’ll be quoting too many of Kanye’s songs 20 years from now.”

After a few unfavorable comparisons, Ezrin added, “Kanye’s greatest achievements have been in the form of excessive behavior, egomaniacal tantrums and tasteless grandstanding.”

Ezrin’s post got a rise out of West — not to mention many others, since some attempts to access the Lefsetz Letter resulted in “connection timed out” messages Wednesday afternoon.

“Bob please never speak in public again… you are everything that is wrong with the old guard …” West said as part of his series of tweets.