Kanye West once again took to Twitter to express his frustration. This time his target was legendary Canadian music producer Bob Ezrin, the 66-year-old industry veteran who recently wrote a biting critique of West.

In an article, Ezrin suggested that Kanye West is not as talented or valuable of an artist as Jay Z, Tupac, The Notorious B.I.G., M.C. Hammer, Eminem, Kendrick Lamar, or Macklemore. At one point he said, “Instead Kanye’s greatest achievements have been in the form of excessive behavior, egomaniacal tantrums and tasteless grandstanding.”

Kanye got wind of Ezrin’s statement and fired back on social media. The rant included Kanye posting, “I’m tired of old people that have no connection with anything trying to comment on music!

Ye’s tweet spree also had at slight shot at Taylor Swift. Kanye wrote, “I made Dark Fantasy and Watch the Throne in one year and wasn’t nominated for either and you know who has 2 albums of the year.”

Swift recently won her second Grammy award for Album Of The Year (Fearless, 1989), but Kanye has been shut out in the category three times (The College Dropout, Late Registration, Graduation).

The Artist Of The Year Grammy reference in Ye’s tweet seems like critical commentary of the fact that Swift has won 2 times while he has yet to be rewarded with the honor. Recently, the two superstars once again had issues with each other over lyrics in Kanye’s song “Famous.”