Guest host Liane Hansen talks about the current Billboard magazine charts with Philadelphia Enquirer music critic Tom Moon and writer Meredith Ochs. Liane asks how an unknown artist like Ashanti can have a debut album that becomes a number-one seller its first week on the charts. They also talk about the marketing of rock music to the wrestling crowd. And they discuss the soundtrack to O Brother, Where Art Thou? It's now in its 68th week on the charts. Liane asks if there is more than marketing at work to keep it there. (7:30) Music heard in this segment is as follows: "Foolish," by Ashanti, from the CD Ashanti. "Can't Get You Out of My Head," by Kylie Minogue, from the CD Kylie. "Get the Party Started," by Pink, from the CD M!ssundaztood. "Yanking out My Heart," by Nickelback, from the CD The Scorpion King. "Indian War Whoop," by John Hartford, from the CD O Brother, Where Art Thou?