How do you know they are growing at a brisk rate? Did you get early access to the spring book? In a city of 4-5 million I wonder how many would eiter recognize or want to hear "Lipstick on your Collar" Looking at Yes.com I am guessing a little over 700 songs played in some type of rotation and other songs dropped in. Rock 100.5 is somewhere near 550 with not many one spins played. TruOldies expansive catalog but not necessarily means they are going to ever catch B98 or anything. They will probably never beat the River either unless Rock 100.5 can start chomp away at the River's younger demo but I just don;t see that happening to any great extent.