Zap Mama (music group)
New CDs: Jessica Simpson, Michael Franti

Jessica Simpson "Do You Know" (Epic/Columbia Nashville) * * 1/2 The moment pop princess/reality TV star Jessica Simpson announced her intention to record a country album, Nashville purists were up in arms. Listening to the result, it's hard to see what the fuss was about: She's every bit as country as Carrie Underwood, and maybe more than Rascal Flatts. The pleasant surprise here is that she's co-written several songs that do indeed probe beneath the cover-girl, tabloid-ready surface of her life. "Sipping on History," credited to Simpson, Hillary Lindsey and Luke Laird, mourns a lifelong might-have-been romance: "I could've been your June...