in reply to I usually listen to...
Do you recognize any of these?
When people ask "what kind of music do you like?" ... the standard answer is "any kind that inspires me to listen to it again instead of ignoring it"
The next "killer app" will be the one that allows a person to find new music that he or she would never have even thought of looking for, but will enjoy ... such an application would ignore GENRE and simply focus on THE INEFFABLE ESSENCE OF PERSONAL PREFERENCE.
If you recognize any of these, you might want to check one or more of the others ... or not.
### here is a tiny sampling of random songs
### you may not have heard any of these, but they are
### all interesting in their own way.