The Knack lead singer Doug Fieger, perhaps best known for the 1979 hit "My Sharona," underwent successful brain surgery Thursday, his doctor reported.

Fieger, 53, had two brain tumors removed during the operation at Cedars-Sinai Medical Center, publicist Guy McCain said. There were no details about the tumors.

Dr. John Yu said the surgery was successful and Fieger was expected to have a full recovery, McCain said in a statement.

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The Knack's upcoming concert tour was postponed, McCain said. The tour had included stops Aug. 11 at the Corbin Music Festival in Corbin, Ky., and Sept. 2 at the Oregon State Fair in Salem, Ore.

The Knack was formed in 1978 and a year later hit it big with "My Sharona." The group's debut album "Get the Knack" sold 6 million copies, followed by a second album "... But the Little Girls Understand," which sold 2 million.

Singer-songwriter Fieger said "My Sharona" was inspired by a girlfriend of four years.

"I had never met a girl like her — ever," he told The Associated Press in a 1994 interview. "She induced madness. She was a very powerful presence. She had an insouciance that wouldn't quit. She was very self-assured. ... She also had an overpowering scent, and it drove me crazy."

Fieger was frank about a period of drug abuse during which he said he "should have died for a number of years."

"I have this feeling that human beings are allowed so much alcohol in their lives and so much drugs, and I just used mine up — and a couple of other people's, too," he said.

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