[smichel17]

> Some artists in those previous eras were able to deliver remarkable music as much as twice a year over consecutive years.

I'll just leave this here https://en.m.wikipedia.org/wiki/Frank_Zappa_discography

[microtonal]

I love Zappa. But I think John Zorn wins:

https://en.wikipedia.org/wiki/John_Zorn_discography