Clay Walker has a bone to pick with country’s newest group of first-timers.  He told the “Modesto Bee,” “I can’t stand to see outdated rock-and-rollers coming in to play country music.  That really pisses me off.  We have great singers, great country musicians.  There’s no reason we have to dilute it by letting people in the format that don’t have any business being in the format.”  The Doobie Brothers, Motley Crue and Aerosmith’s Steven Tyler are among those who have created country projects over the past several years.