Britney Spears [ tickets ] is scheduled to perform at Portugal's Rock in Rio-Lisbon festival on June 5. The multi-day event opens on May 29 at Bela Vista Park.

Sting, Guns N' Roses and Metallica are among the other bands on the bill.

3 Doors Down [ tickets ] is scheduled to play a March 27 benefit show in Mobile, AL, to benefit Gulf Coast children's charities. Two members of the band make their home n the Mobile area.

Alicia Keys [ tickets ] will appear on the Jan. 24 bill of the seventh annual Air Jamaica Jazz & Blues Festival, which runs from Jan. 22-25 at Jamaica's Cinnamon Hill Golf Course in Rose Hall, Montego Bay.

Others scheduled to perform during the festival include India.Arie, Nancy Wilson, Beres Hammond, Cassandra Wilson, Bobby Womack, Monty Alexander, Kenny Rogers, Michael McDonald and Omar Cunningham. The late Johnny Cash, who made a home in Montego Bay, will be honored in a special tribute.

Natalie Cole will perform a Jan. 13 concert with Ohio's Dayton Philharmonic Orchestra. The show takes place at the Benjamin and Marian Schuster Performing Arts Center.