Is it mathematically possible to run out of music

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I'd have to say the answer is no, but I'm not a mathematician. When you really think about it.... There are only 8 notes in a scale with varying 1/2 tones of sharps and flats. Of course, there are many octaves, but only so many notes within. You certainly have a finite number of chords within each scale. But then there is timing... There must be a gajillion ways ways that notes or chords can be strung together from a percussionary standpoint. Just using two notes and varying the staccato, timing, and sustaining, you could create two completely different (albeit simple), songs. Then you have crescendo or how loud and soft all the different notes can be played. Not to mention a variety of different instruments, each which can create it's own unique sound for each note. The bottom line is, I don't think we'll ever run out of new music. But something about that strikes me as strange. From a pure mathematical standpoint, it seems we should eventually. Extra credit: What role does music play in our evolutionary development? How did our minds come to discover, understand, create, and eventually come to appreciate such a seemingly useless endeavor (from a practical standpoint), such as music? What if any, survival benefit did our ancestors gain from music? If the answer is none, then why did we devolop a musical sense? Does music play a role in any other species?