Lindsay Lohan, Nicole Richie, and John Mayer were among mourners at a memorial service for DJ AM.

The stars, along with Lindsay’s girlfriend Samantha Ronson, socialite Nicky Hilton, and actor Eric Dane, gathered with family and fans at the Hollywood Palladium to pay their respects to the musician, real name Adam Goldstein, following his death last week.

An onlooker said: “The crowd was very hip and eclectic, there were people dressed in smart black suits and people dressed in jeans and T-shirts. It was packed though, you could tell how well loved he was. It was a very somber and sad crowd.”

During the two-and-a-half hour long service, which was structured like an Alcoholics Anonymous 12 steps meeting, his girlfriend, model Haley Wood addressed the 3,500 mourners: “He was my soul mate, and now he is my soul. He is my amazing grace.”

The memorial venue opened up three entrances—one for family and VIPs, one for friends, and one for fans. The service followed a private burial for 36-year-old Adam, who was found dead in his New York apartment last Friday, at Hillside Memorial Park and Mortuary on Wednesday, September 2.

Although the cause of DJ AM’s death remains unclear, it has been reported he was found with undigested painkillers in his stomach and mouth. A crack pipe and some of the illegal drug were also discovered near his body, with his representative admitting he was due to go to rehab to battle his addiction. The musician died with a $1 million estate and no will.