KE$HA Describe it as “post apocalyptic Mad Max,” and Kesha’s “Get Sleazy” tour actually sounds appealing, even slightly bad-ass. On stage, her mess of trashy music makes you wish you hadn’t lasted the apocalypse. For someone who’s only been around for just under two years, she’s had quite an impact on the pop charts, racking up hits with “Tik Tok” and “Your Love is My Drug.” Having a good time and flirting with Auto-Tune makes up her songs, so her tour of elaborate lights and skanky outfits is a party wherever she ends up. If getting “slea$y” is something you don’t mind doing with a thousand other people, maybe a trip to the pop diva’s show is in order. With LMFAO and Spank Rock. $20-$75. Verizon Wireless Ampitheatre. www.livenation.com.