Minimalism or "recycled material"

[symbolism of l. ron]

Although I am not an expert on minimalism, I do know enough about it to bring up the said point. If you listen to much minimalistic work such as that by Glass, you should find that almost all of it is a general theme cycled over and over again with little variation. Sure, the chord changes may be unusual, and things like added instruments can provide some variety, but at its base the music is simply the same. I personally like some of it, but others might not share this opinion.

Hmm, a precursor to the ceaseless spamming of I-IV-V-I in today's music?

[retrouvailles]

Glass should not be seen as the be all and end all of minimalism. Reich, Adams, etc are better at minimalism, for they offer much more harmonic, textural, and timbral variation while still using minimalist practices, and those three things, if you ask me, are vital to a good minimalist work. They also aren't slaves to their own laws, which is what Glass is in a lot of his works, hence the "I IV V I spamming" comment you had.