Credit: Bobby Bank/WireImage

Eagles co-founder Glenn Frey, who died in January at 67, received a stirring tribute Monday night at the Grammys. Frey’s fellow Eagles co-founders Don Henley and Bernie Leadon, other Eagles members Joe Walsh and Tim Schmit, and singer-songwriter Jackson Browne performed the band’s classic song “Take It Easy.” But the lineup didn’t include former Eagles guitarist Don Felder, who took to Twitter Tuesday morning to share his thoughts about being omitted.

“I would have been honored to have joined The Eagles last night for the Glenn Frey Tribute at the Grammys but sadly I was not invited,” he wrote.

Felder performed with the band from 1974 to 1980 and on reunion tours from 1994 to 2001. He had a famously sour relationship with Frey: In the 1980 concert that marked the end of the group’s initial run, Frey and Felder reportedly taunted each other from across stage and brawled after the music ended. And while he initially joined the reformed group, Felder was later fired from the band and became embroiled in a series of legal battles with his former peers, including Frey.