Billy Joel [ tickets ] reportedly was admitted to a Long Island, NY, hospital late last week after suffering severe stomach pains, and is expected to spend another day or two in the hospital.

According to an MSNBC.com report, the singer--who is scheduled to play two concerts next month--is undergoing tests to determine the cause of the problem.

A week after it was knocked out of the No. 1 spot on The Billboard 200 album chart, The Game [ tickets ]'s "The Documentary" has reclaimed the top position.

About 190,000 copies of "The Documentary" sold in the U.S. in the last week, enough to easily stave off the competition.

Tina Turner [ tickets ]'s "All the Best" sold 121,000 copies during its first week to debut at No. 2 on the chart, the highest chart appearance of her career.

Green Day's "American Idiot" continues to sell briskly, jumping one spot to No. 3. Last week's No. 1 album, Kenny Chesney's "Be as You Are: Songs from an Old Blue Chair," slips to No. 4, while John Legend's "Get Lifted" climbs one rung to No. 5.

Doobie Brothers drummer Keith Knudsen, who had been hospitalized in Northern California for a month, died Tuesday (2/8) of pneumonia. He was 56.

Knudsen joined The Doobie Brothers [ tickets ] in 1974, and remained with the group through its 1982 farewell jaunt. The Doobies reunited in 1993, and he had been playing with the band ever since.