Ron Stringer, the owner of Justin's Music in Detroit told Reuters fans gathered to buy Aaliyah's records after learning of her death.
"The reaction has been very supportive, very much regret," he said.
Music reps are also mourning the death of the young, rising star.
"I think Aaliyah was the next Jennifer Lopez, the next Whitney Houston, the next Madonna, the next Janet Jackson," Emil Wilbekin, editor-in-chief of Vibe magazine told ABCNews.com on Tuesday.
In a recent interview, the singer reflected no her career. "What do I want people to say when I'm long gone? I want people to look at me as a full-on entertainer and a good person."
As fans begin to mourn her loss, U.S. aviation experts joined the investigation into the cause of the crash that killed R&B singer Aaliyah and eight others on Saturday on the Abacos Island in the northern Bahamas.
Bahamian police said the plane apparently had engine problems as it took off for Opa-Locka airport near Miami, Fla., Reuters reports.
The New York Post also reports that the pilot of the Cessna 402 and the singer's video crew got into a heated argument before takeoff over the weight of the equipment and passengers.
The pilot allegedly argued that the chartered plane was overloaded, but eventually took off, fellow pilot Lewis Key told the paper. He also added that the pilot had trouble getting one of the engines started.
Aaliyah is survived by her mother, father and brother.