The Eagles

The founding guitarist left the group soon after what he later admitted was a "very disrespectful" act.

Don Felder appeared unsteady and cut a performance short after suffering a bout of dehydration last week.

Staff helped the former Eagles musician offstage after he became visibly unsteady.

It was actually his decision.

They're one of the most enduring bands in music history.

Don Henley called him "one of the best musicians I've ever worked with in my life."

He was "the one who started it all."

The concert is Jan. 30 in Inglewood, Calif.

"You’re playing, and they’re all staring at all the stuff on the ceiling."

It marked the end of an era.