When he's not commandeering the stage as the boisterous bassist for SoCal punks Blink-182, Tweeting wisdom to more than 1.4 million followers, or handling album production duties for bands like Motion City Soundtrack and New Found Glory, you'd think Mark Hoppus would turn down the music.

Last night, at an impromptu gig at a New York City bar, Panic! at the Disco frontman Brendon Urie had a simple message for fans worried about the band's recent personnel shifts: "Don't Stop Believin'!"

Tom DeLonge may be on tour with Blink-182, but that hasn't stopped him from pursuing slightly loftier ambitions with his other band, the conceptual prog-rock outfit Angels & Airwaves.

Lots of musicians tweet -- but all that Twitters is not gold.

That's why you'll want to check out SPIN.com every Friday to see whose tweets we're reading this week -- then update your TweetDeck! (Obligatory Self-Promotion: ...while you're at it be sure to follow @SPINmagazine!)

This week's winners:

In a week when the big news was the death of Michael Jackson, some of music's biggest stars were still making headlines: Chris Brown pled guilty to assaulting Rihanna, Marilyn Manson discussed $200K drug budgets, and Black Eyed Peas frontman Will.i.Am's entourage exchanged words -- and, allegedly, fists -- with gossip b