Tickets go on sale Saturday for the bill of Slipknot, right, and Mudvayne, Feb. 20 at the Palace. There's a two ticket limit per person. . . . Tickets go on sale Sunday for AC/DC's April 20 date at the Great Western Forum. . . . Saturday is also the on-sale date for two Universal Amphitheatre shows: Erykah Badu March 10 and David Gray May 18. . . . Patti LaBelle comes the Amphitheatre March 8, with tickets available Sunday. . . . Nick Cave plays a solo show March 25 at the Wiltern Theatre. Tickets go on sale Saturday. . . . Tickets will be available Friday for a show by Nelly Furtado at the El Rey Theatre on March 16. . . .Talib Kweli and Jack Herrera share the bill March 9 at the El Rey (on sale Saturday) and March 10 at the Glass House (on sale today). . . . Murder City Devils and the Icarus Line play the El Rey on March 22. Tickets go on sale Saturday. . . . Coming to the House of Blues: Carl Thomas March 3, Jazz Is Dead March 12, Mya March 21 and George Thorogood & the Destroyers March 22. . . . Tickets will be available Saturday for the pairing of Jeb Loy Nichols and Kasey Chambers, March 20 at the Roxy. . . . Union Underground headlines the Key Club March 20, with tickets available Saturday. . . . The Coach House schedule includes Shawn Colvin Feb. 18and the Mother Hips March 30, while the Galaxy Theatre has Eek-A-Mouse March 3 and Buck-O-Nine April 20. . . . Coming to the Troubadour: the Figgs March 21, D.R.I. March 22, Cursive March 25.