You have now come upon the conundrum of the format and that's what vocals to choose because they flavor your product. I have found over the years that you can get away with a ton of different instrumentals as long as they are pop songs without words. Good melody and hooks go a long way in all the music you pick to play but the vocals are what everyone really cares about, struggles with, and gripes about at the same time. Broadcast Architecture chose the path that leans urban adult. My show is more toward the old NAC feel with adult tunes that come from many different areas like hip AC and Triple A. I can play anything from Alison Krause, Everything But The Girl, Sting and Van Morrison to name a few but I also have a select number of "hit" songs that get played once an hour as a touch point to different segments of the audience. I play currents and a few of my new vocal ones are by Diana Krall, John Mayer and the Cowboy Junkies! I also enjoy programming Christmas music because I get to spin a "song" by Celestrial Navigations called "the Train". It's really a spoken story set to music and is always the most asked about vocal I get to play each year. You can play a ton of different things but do you have the smarts to make it sound good? No matter what vocals you choose, just make sure they work with the songs on either side and don't jar the listening audience. There is a difference between jarring them and presenting something out of the box. Be different because it's good. Don't be different because you can. Figure out what your "thread" is that will tie all your music together and go for it. Don't pick something because you think it's the hippest thing since sliced bread. Do it because your audience will think it's the hippest thing since sliced bread. I think this could be one of the bigger challenges the music will face in 2010 because what has been done will not get us where we need to go. The possibilities are endless in how this format will reinvent itself and a lot of that will come from the vocals, and the amount of vocals we play.