Former Eagles musician Don Felder required medical attention during his recent performance aboard a cruise ship.

The gig was part of the Rock Legends Cruise, the annual seafaring festival which departed from Miami on Thursday. In addition to Felder, this year’s lineup includes Alice Cooper, Styx, John Waite, Foghat and Robin Trower.

Felder’s Thursday night set started typically enough, as the veteran rocker delivered such classic tunes as “One of These Nights” and “Peaceful Easy Feeling.”

However, during the seventh song of his set, “Tequila Sunrise,” Felder became visibly unsteady. The singer appeared to stumble as he approached the microphone, and medical professionals quickly came to his aid. The rocker needed help to walk offstage as concerned audience members looked on.

Watch the video below