Van Halen

The pop star was stumped in Jimmy Kimmel's music trivia.

Hopes for a global Van Halen resurgence ended in Arizona after 80 tense concerts with Sammy Hagar in 2004.

Fourth and final single from hit '1984' album also signaled the end of original lineup's spectacular run.

Singer says his group’s success led to copycat acts who resorted to “gimmickry and trade crap.”

Health setbacks are partly to blame for their lack of touring.

Singer continues to cast doubt upon band's future.

The score was never officially released, making it some of the rarest material of the guitarist's career.

But not a full tour, he says.

The frontman insists he not only wrote the band's songs, but structured their guitar solos, designed album covers and much, much more.

Singer says band’s work ethic came out of years of preparation and that he started getting ready for Las Vegas residency 11 months ago.