· The upcoming 39th season of "Sesame Street" will rock with a drop-in from Feist. The Canadian songstress will sing "Songs" with Elmo on August 11, joining a roster of guests that also includes Jack Black, Jessica Alba, David Beckham, Heidi Klum, Neil Patrick Harris and Jenny McCarthy.

· First he brushed the dirt off his shoulder in homage to Jigga. Now presumptive Democratic presidential nominee Barack Obama has given a shout-out to Weezy at a town-hall meeting in Powder Springs, Georgia. Obama delivered a speech about high school dropout rates and told teens that they were better off staying in school than wishing for NBA or hip-hop glory. "You are probably not that good a rapper. Maybe you are the next Lil Wayne, but probably not, in which case you need to stay in school," he said.

· It will probably take another month for Michigan authorities to determine what caused the deaths of a 33-year-old woman and a 28-year-old man at last weekend's inaugural Rothbury Festival, which featured sets from Snoop Dogg, Dave Matthews and John Mayer. Initial autopsies showed no sign of foul play.

· The Smashing Pumpkins are celebrating their upcoming 20th anniversary by playing a series of mostly smaller venues in August, with the promise of "unique sets and songs." The only date announced so far is an August 9 gig in Hammond, Indiana. In November, the band will play anniversary shows in New York, Los Angeles and their hometown of Chicago.

· Ludacris has reportedly signed a multimillion-dollar deal with AT&T to be their spokesperson and appear in commercials beginning next month. Somewhere, Bill O'Reilly is changing phone companies.

· Amnesty International is launching a campaign called the Small Places Tour in which bands will play hundreds of shows across the globe to help raise money and spread the word about global human rights issues on the 60th anniversary of the Universal Declaration of Human Rights. The spokesmen for the tour are U2's the Edge and Peter Gabriel, and acts are encouraged to sign up on MySpace for a single gig or a full-blown tour.

· The Grammys are celebrating their 50th anniversary with a tour. So, what does a tour put on by the people who give you Brad Paisley and Kanye West in the same show look like? How about a five-city swing with sets from John Legend, nine-time Grammy nominee (nine time, really?) Busta Rhymes, Cat Power, Colbie Caillat, Kat Deluna, Kid Rock, Missy Elliott, Ozomatli, Pitbull, Seal and Sean Kingston. We're told not all artists will be playing all shows.

· Dave Matthews will play an acoustic show on April 6 at Indiana University in Bloomington, IN in support of Barack Obama. Matthews will be playing with his longtime collaborator, Tim Reynolds. The concert is open to all Indiana residents, or those going to school in the state. For our Hoosier friends, go here for more info.

· Also, another reason to pour one out, this time for one of the original members of the breakdancing group, the Rock Steady Crew, Frosty Freeze (born Wayne Frost), who passed away this morning (April 3) in New York. Frosty Freeze invented the "suicide" move, and starred in such classic hip-hop films as "Style Wars" and "Wild Style," as well as "Flashdance." Photos of his moves can be found here.

· The Pitchfork Music Festival, taking place July 18-20 in Chicago, has added a bunch more acts to this year’s roster, including: Ghostface & Raekwon, Dinosaur Jr, Mission of Burma (performing their classic album, Vs., Jarvis Cocker, The Apples in Stereo, Jay Reatard, the Dirty Projectors, and F--- Buttons (who were awesome last night in New York).

· Up until now, the only thing Prince and Dave Matthews have had in common is their mutual affinity for busting out the "guitar face" when soloing. But the jam king is borrowing a page from his purple majesty’s playbook and bundling vouchers for a free downloadable iTunes live-albums with every ticket purchase to his band’s upcoming summer tour. The live albums will be compilations of the best performances from the summer gigs, and will be available in September, but only if you get your tix at a venue serviced by Ticketmaster.

· Can't wait till Tuesday for Fall Out Boy's Live in Phoenix CD/DVD set? You can stream the whole shebang over at Buzznet or Friends or Enemies right now.

· Police reportedly arrested Poison drummer Rikki Rockett (born Richard Ream), 46, on Monday at Los Angeles International Airport on a rape warrant issued in Mississippi.