Pop Date Book

* Ray Charles has been added as co-headliner on Willie Nelson’s Feb. 9 Universal Amphitheatre concert.... Nelson will also play Feb. 8 at the Grove of Anaheim (formerly the Sun Theatre).... The 17th annual Elvis Birthday Bash will be held two days early, on Jan. 6 at the House of Blues. Also due at the West Hollywood club: Cowboy Mouth and Afroman on Jan. 22; Jack Johnson, Feb. 17; and Craig David, Feb. 18-19.... Now on sale at the Roxy: Michelle Branch on Feb. 8 ... Former New York Dolls guitarist Sylvain Sylvain will be at the Knitting Factory Hollywood on Jan. 16, while King Crimson’s Trey Gunn brings his own band to the club’s AlterKnit Lounge on Jan. 19.... Alt-country forerunner Blood on the Saddle is back together, playing the Blue Cafe in Long Beach on Jan. 21.... Taj Mahal has joined the lineup of the “Down From the Mountain” concert of music from “O Brother, Where Art Thou?,” Feb. 17 at the Universal Amphitheatre....The Chieftains concert scheduled for Jan. 15 at the Wiltern Theatre has been canceled. Refunds are available at point of sale.