It’s the first day of spring. Go see Kenny Chesney’s “No Shoes Nation” tour at the Times Union Center tonight (Thursday, 7 PM, $40.50-$78, 800-745-3000). . . . Have a High Life with the Titanics at Valentine’s tonight (8 PM, 432-6572). . . . It ain’t for their physique that they call them the Stickmen. Tony Levin will prove his virtuosity on the instrument at the Van Dyck tonight (7 and 9:30 PM, 348-7999). . . . Caffe Lena’s eighth annual blues weekend starts tomorrow (Friday). Catch a bunch of great acts through Saturday (8 PM, $16, 583-0022). . . . Nickel Creek fiddler Sara Watkins will make her way to the Egg on Saturday (7:30 PM, $20, 473-1845). . . . The Lucky Jukebox Brigade encourage the use of Snuggies, snow pants, flip flops and sundresses for their show on Saturday with Bela’s Bartok and Homebody (9 PM, 432-6572). . . . The Polar Bear Club, however, suggest you wear nothing for their plunge into the Upstate Concert Hall on Wednesday (7:30 PM, $14, 371-0012). . . . None other than GZA the Genius will be polishing his liquid swords at the Pearl Street Nightclub on Wednesday (9 PM, $23, 413-586-8686).