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========== Hey, Vsauce. Michael here. And the iTunes store contains 28 million different songs. Last.fm carries 45 million songs and the
Gracenote database of artists, titles, and labels contains 130 million different songs.
That's a lot. If you were to listen to all of the songs in the Gracenote database one
after the other in a giant playlist, it would take you more than 1,200 years to complete. But since there are a finite number of tones
our ears can distinguish and because it only takes a few notes in common for two musical
ideas to sound similar, will we ever run out of new music? Will there ever be a day where every possible
brief little melody has been written and recorded and we are left with nothing new to make? A good rule of thumb might be to sa...