Chan Marshall, aka Cat Power, has moved to the beat of her own drum as an artist, delving into moody folk-rock on 1998's "Moon Pix", stark chamber pop on 2003's "You Are Free", Memphis blues on 2006's acclaimed "The Greatest" and covers on 2008's "Jukebox" and "Dark End of the Street". But on her newest, "Sun" (Matador, Sept. 4), she literally acts as her own drummer -- as well as guitarist, keyboardist and eve
