Often I hear lovely classical music pieces that I'm unable to identify and that I would like to know. Shazam fails miserably 90% of the times and I'd like to know if there's any reliable similar app but for classical music. For example, I heard this piece of classical music in an episode from The Simpsons for the first time and now I've heard it again in an ad from Picasso's museum in Barcelona. I tried to use Shazam to find out the title and the author without success. Does anybody know how could I identify it?