I did a second major in music in college and I swear every course had to start with this "what is music" discussion, which is pointless imo because the difference between noise and music is totally subjective.
I WANT to say that none of the sounds or the parts of the Grateful Dead song that I listened to are music, but that is because I don't like them. I prefer my music to have the tones, chord progressions, pitches, rhythms, etc. from traditional Western music that I am used to, otherwise it is difficult for me to enjoy or find meaning/expression in it. But just because I don't like/understand them, doesn't mean that they're not music... So I guess I would conclude that they are all music because they are all sounds, and all sounds could be considered music.