Hi oldies76. Do we actually know how many songs are being tested? I'm sure many more songs are being sampled at the AMT's, but the ones that pass are what Jhani Kaye plays. I wonder if the extras are songs that were marginal and played for what a friend of mine calls flavor. I feel that the PD's at CBS-FM and K-Earth are tailoring the sound of these stations to their markets for the most part. It seems to me that WCBS was always more eclectic in it music choices. For many years KRTH had a super tight playlist because they still had KRLA as competition. KRLA was aimed at more of the "Hispanic/born in LA" audience with KRTH being a more Anglo leaning station. Of course this doesn't apply now. Remember this, Doo Wop was popular much longer in NY than it ever was in LA, so there's a whole segment of music that saw very little play in LA. I wish I had a definitive answer for you. As to how they're testing, my guess would be AMT's. AKA Auditorium Music Tests. They bring in a group of people representing the station's demos and play 8 second song hooks that the audience rates. These people are not told what station they are testing for and the lists are usually made up of music that the PD comes up with. I've been at stations where the PD actually would ask the staff to contribute song titles to be included. Unless someone from KRTH or CBS would like to post, I have no way of knowing for sure...