WASHINGTON TOWNSHIP, N.J. -- Some New Jersey high school students say they learned a tough lesson about show business recently -- that some idols may have feet of clay.

The Philadelphia Inquirer reported that American Idol singer Clay Aiken disappointed members of Clearview Regional High School's vocal ensemble in a big way.

The Gloucester County vocal group was invited to sing with Aiken at his sold-out concert last week in Washington Township. The Inquirer reported that Aiken reneged on promised face time, autographs and a performance fee.

The newspaper said that a student who took a picture of the singer during rehearsal was attacked by a security guard on Aiken's order.

Aiken allegedly also made a big show of handing over a promised $500 performance fee to the vocal ensemble, but the envelope was empty.

Aiken did not respond to requests for an interview by the newspaper.