When I was at AK last month I noticed the AK music was more "pop"-like - danceable, upbeat stuff. I was standing in the queue and I was like "What is this? This does not "feel" like Animal Kingdom??" I heard it throughout the park as well. I loved the instrumental music that used to play throughout the park/entrance plaza. On a previous trip I bought the CD with the Tree of Life music and I love it. I'm sure the instrumental stuff still plays elsewhere, like around the Tree maybe?, but this newer music was very noticeable and in my opinion I did not care for it at all.
I miss the Safari music as well.