What is the fine-grained topic of the following text: Tunstall, Todd Rundgren, Keb Mo, Dave Stewart, Goo Goo Dolls’ John Rzeznik and Fall Out Boy’s Patrick Stump along with newcomers such as Allen Stone, Nikki Jean, The Dirty Heads, Grace Potter & the Nocturnals, Mayer Hawthorne, Eric Hutchinson, Chromeo, Matt Nathanson, Parachute, Plain White T’s, soul diva Sharon Jones, Diane Birch, L.A. neo-R&B party band Fitz & the Tantrums, hot new alternative band Neon Trees and veteran alternative mainstays Guster. Only return the topic.
Musicians and Bands