Kate Nash Brings Her New Sound to Toronto By Natasha Tsakiris She’s sugar and spice, and not playing nice anymore! No longer a hot and bothered redheaded mess, Kate Nash is electric fire, coming back full-throttle with her third album Girl Talk. The young British singer-songwriter played to a full house Friday night at the legendary Horseshoe Tavern, where she revealed a new look and a new sound. Showing a darker version of her usual bubbly, 50s pinup-girl demeanor, Nash has dropped the piano and picked up the guitar along with a tough-girl attitude, releasing her inner punk-rock chick in the vein of Courtney Love. On Girl Talk, Nash is…