Dar Constitution Hall

Just announced Santana, Derek Trucks Band -- Merriweather Post Pavilion in Columbia on April 6. Tickets on sale now. Also, the Megadeth tour, featuring In Flames, Children of Bodom, Job for a Cowboy and High on Fire, makes a stop there April 26. 410-547-7328 or ticketmaster.com. moe. -- The 9:30 Club in Washington on Feb. 28. 800-955-5566 or tickets.com. Chris Rock -- DAR Constitution Hall in Washington on April 18. Tickets go on sale at 10 a.m. tomorrow. 410-547-7328 or ticketmaster.

Nelly and the St. Lunatics / DAR Constitution Hall With two multiplatinum albums under his belt, Nelly has become one of the busiest hip-hop/pop artists to emerge in the last two years. He and his group, the St. Lunatics, will keep it hot as they blaze through DAR Constitution Hall Saturday night. Show starts at 8 p.m. Tickets are $45 and available through Ticketmaster by calling 410-481-SEAT or visiting www.ticketmaster.com. American Idol / MCI Center Pop Tart presents American Idol Live, the splashy, glorified karaoke show featuring most of the top 12 finalists from the hit Fox show.

Just announced Jennifer Hudson Lyric Opera House on April 4. 410-547-7328 or ticketmaster.com. Lil Wayne 1st Mariner Arena on March 20. Tickets on sale at 10 a.m. tomorrow. 410-547-7328 or ticketmaster.com. Less Than Jake Rams Head Live on March 13. 410-244-1131 or ramsheadlive.com. Gladys Knight DAR Constitution Hall in Washington on March 28. 410-547-7328 or ticketmaster.com. Still available Christopher Cross The Birchmere in Alexandria, Va., on March 9. 703-549-7500 or birchmere.

India.Arie This two-time Grammy-award-winning artist incorporates soul, R&B, blues and country on her intensely personal third album, Testimony: Vol. 1, Life & Relationship. Since her arrival on the music scene in 2001, Arie has established herself as an intuitive and bold songwriter with hits such as "Little Things" and "I Am Not My Hair." She plays tonight at Rams Head Live, and also Oct. 4 at DAR Constitution Hall. Rams Head Live is at 20 Market Place. Doors open at 7:30 p.m. and the show starts at 8:30 p.m. Tickets are $35. Call 410-244-1131 or go to ramsheadlive.