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A day after 36-year-old Adam Goldstein, known as DJ AM, was found dead in his New York apartment, frequent collaborator Travis Barker of Blink-182 paid tribute to his fallen friend on Twitter and onstage. The pair performed together as TRV$DJAM and survived a Learjet crash last September that killed the flight’s four other passengers.

“Don’t know how i am gonna play 2night but i am for AM,” Barker tweeted this afternoon. “My brother is gone.i love u and miss u, i’ll never forget all the good times we had.” He later added, “I’ll never forget everything we’ve been thru and every time i play the drums i’ll think of you. U were an amazing friend/DJ/human being” and “Rest In Peace my brother, this really fucks me up.”

See pictures of DJ AM with Travis Barker, Fergie, Jay-Z and more.

At Blink’s Hartford, Connecticut concert tonight, Barker skipped his usual levitated drum solo during the encore, and the band hosted an onstage vigil for AM. “We lost a really dear friend yesterday,” a tearful Mark Hoppus said from the stage. “He was an innovator and he was a genius and he loved music more than any other person on this planet, and above all, he was an amazing friend. We’re doing the best we can to get through tonight, but right now I’d like to take down the lights and have a moment of silence for our friend Adam.” (See a clip from the show, below.)

As Rolling Stone reported, DJ AM was found face down and shirtless on the bed in his lower Manhattan apartment yesterday afternoon when friends called authorities because they hadn’t heard from him in several days. There was no sign of foul play, but a crack pipe and prescription drugs were found in the apartment. An initial autopsy has proved inconclusive, the AP reports, and law enforcement sources say it will take weeks for toxicology reports to determine Goldstein’s cause of death.

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In addition to Barker’s heartfelt notes, stars including Diddy, John Mayer, ?uestlove and Paris Hilton headed to Twitter to remember AM, who was well known for handling the turntables at celebrity hotspots and high-profile events. Mandy Moore, who dated Goldstein several years ago, released a statement Sunday that reads, “I am absolutely heartbroken. For those of us lucky enough to have known him, Adam radiated a contagious exuberance for life and also personified the very definition of a true friend. To say that he will be missed beyond words is an understatement. My heart goes out to his loved ones.”