Share your experience!
When I click "Tracks" on my Xperia Neo L, a message will pop up "Unfortunately, Music has stopped" and will bring me back to the home page. 
Settings > apps > all > walkman > clear data > restart your phone > check again
Thank you so much for your prompt response. However, I was not able to find "walkman" in my apps. I however have "Music" and "Music Player" in the least. Does this help? Is this some kind of a virus stopping me to view all my music list?
Yes that should do it
Sorry, done as instructed and restarted phone. Still the same.
Do you have any taskiller or antivirus?
No Sir. What can you advise?
Done booting phone on safe mode. Same error still occured.