For beginners, I suggest you don't touch jazz now, like Dave Koz's. Even if the score is simple, it takes a lot of playing skills and emotions to really blow out the effect. It is difficult for beginners to master every detail, and blind imitation will only be a bad habit. Besides, the equipment in Dave Koz is very good. I don't think you have a steel whistle yet. Besides, there are few simple songs except one.