Katy, meet Jill

One of the many musicians performing at the Warped Tour show in Mansfield today is Katy Perry, the rocker with the hit single "I Kissed a Girl" - not to be confused with Jill Sobule's 1995 song of the same name. It would be easy to mistake one tune for the other, of course, as both songs have the same title and are about the same thing. Actually, now that we think about it, maybe Perry and Sobule should meet. They should definitely meet Samantha Ronson and Lindsay Lohan. Also on tonight's bill are Gym Class Heroes and a bunch of other bands that can be found at warpedtour.com. 11 a.m. $26. Tweeter Center, 885 S. Main St., Mansfield, 508-339-2333. ticketmaster.com