No need to continue the metaphor: the universe of music is too vast to comprehend. Occasionally someone tries to hint at this vastness. One such was Charles Ives in the sketches for his Universe Symphony. Here is a brilliant account of the piece. It is hard to think of anything to compare it to. Perhaps Mysterium, an unfinished project of Scriabin that dates from roughly the same period, the second decade of the 20th century. Another comparison might be to Dante's Divine Comedy, a work of art that spans the whole universe of human understanding.
I'm fairly comfortable with most composers and a lot of pop music. I have a fair idea of what is going on in the music and the aesthetic value of it. But there are composers that I have not even yet attempted to come to terms with and Charles Ives is one of these. Scriabin, too, possibly. I just don't know what I think about Ives' music. But I am certainly going to have a very serious look at it. In the meantime, here is the first section of his Universe Symphony realized by Michael Stern and performed by the Rundfunk Sinfonieorchester Saarbrücken under his direction.
A couple of days ago another version of the piece was performed in New York by the Nashville Symphony. Here is news clip with the music director discussing how it was put together.
Five conductors? Makes sense. But poor Stockhausen! Outclassed by Ives decades before he wrote his Gruppen for three orchestras and three conductors!