In 11.04 I used banshee or rhythmbox because it had a feature that told me, when I was listening to a song what other bands from other similar groups I would enjoy. Most of the time it was correct or at least it helped me find a group I have not heard for a long time.
In 11.10 neither of them have this feature or at least I do not know which one had it and how to activated it again.
What music player has this particular feature in 11.10