Rock lives!

Alice Cooper, Neil Diamond, Tom Waits, Dr. John, Darlene Love and Leon Russell were inducted into the Rock and Roll Hall of Fame on Monday, which got us thinking: Is rock 'n' roll really as dead as some people say it is?

True, you're more likely to hear hip-hop or extremely pop-ified rock songs on the radio these days, but there are some great acts making new rock hits, including newly crowned Grammy winners for Album of the Year Arcade Fire and no-we-won't-sell-out-to-"Glee" rockers Kings of Leon.

SLIDESHOW: Hear the biggest voices in rock music.

The "classics" like U2 and Bruce Springsteen are also still making great music (and has Coldplay been around long enough to be considered a classic yet?).

It seems like all of the names that still count as "rock" are united by one common feature: A strong, clear, powerful lead singer. With that in mind, let us know: Who is the biggest voice in rock music today?