Aerosmith

Drummer takes stage in Las Vegas after fallout led to lawsuit.

Steven Tyler leads fans through chant of city slogan.

The set included renditions of "Livin' on the Edge" and "Walk This Way."

Band says drummer "has not been emotionally and physically able to perform ... for the last six months."

Drummer tells security staff members they’re just doing their job.

The drummer had hoped a legal injunction would get him back in the band in time for the Grammy Awards.

The groups will team up for a rendition of their classic collaboration, "Walk This Way."

Frontman resented being sent to rehab in the ‘80s but later became "grateful" for that decision.

The song marked a stark change in subject matter for the band.

Roger Daltrey and Steven Tyler both suffer health issues.