A fortune-kissed emblem of the Internet age, Kina Grannis submitted a YouTube performance to win a contest sponsored by Doritos, appeared in a 2008 Super Bowl commercial and earned a contract from Interscope. She graduated summa cum laude from Southern Cal, so she's smart, but she doesn't get any points for adventurousness. Her standard-issue, Lilith-ready, acoustic-driven singer-songwriter fare possesses graceful sonic sophistication amid the showy voice trills and emotional pleas that typically underscore Grey's Anatomy's weekly melodramas. Imaginary Friend opens the 8:30 p.m. show. —Chris Parker