I can think of many connections with the notion of synchronicity and the collective consciousness when it comes to music. The very notion of music itself is conceived of as mere sounds, however, without thought, there is only music. Here's what Edgar Allen Poe had to say:
"SHADOWS OF shadows passing. It is now 1831, and as always I am absorbed with a delicate thought. It is how poetry has indefinite sensations, to which end music is inessential. Since the comprehension of sweet sound is our most indefinite conception, music, when combined with a pleasurable idea, is poetry. Music without the idea is simply music. Without music or an intriguing idea, colour becomes pallor, man becomes carcase, home becomes catacomb, and the dead are but for a moment motionless."
So Poe understands that music without an idea is simply music. But when thought is combined with the music, well, that's where the indefinite come in. Very interesting stuff.
When we think about classical music and refined or ancient musical techniqe, we don't assume that it suddenly sprung from nothing. It was indeed a learning process. Beethoven, Bach and Mozart wrote their music inspired by their surroundings and emotions, so right here we see that there is something more to music than just straight sound. But we find music in nature; birds singing, rivers rushing and trees swaying in the wind - in essence, the music of the spheres, transcended into elemental vibrations, on planet earth. But no more is human made sound just primitive grunting and growls. It has matured and manifested itself into the creation of all music we hear and this is an important theme to remember when dealing with synchronicity.