Lady Gaga, Cher, Snoop Dogg, Adam Levine Among Musicians Tweeting Election Elation

The music industry played a key role in Barack Obama’s re-election, and its stars are showing their devotion -- and relief -- on social media.

Musicians played a key role in Barack Obama’s re-election, with some hitting the campaign trail (Bruce Springsteen, Jay-Z), others performing at stump stops (Katy Perry, Jason Mraz, Foo Fighters) and many more endorsing the president via video pleas, tweets, radio ads, onstage banter and letters, among them: Barbra Streisand, Beyonce, Cher, Madonna,, Pras, John Legend and Snoop Dogg.

PHOTOS: Hollywood Hits the Campaign Trail for Obama, Romney

So what did the hitmakers have to say as the 2012 election results came in? We scanned Twitter and found a wide swath of reactions, from elation to humility, pride to worry, not to mention scores of Instagram photos of stars doing their civic duty.

STORY: Presidential Election: What Hollywood Is Saying

See a smattering of music industry Election Day tweets below: