I don’t like them… bunch of pot heads, but there is Led Zeppelin, Genesis ( with Peter Gabriel), oh and Pink Floyd … how do I forget that! Jim Morrison & the Doors farther back but they made great music. That was the LSD years.There are several theologians (and NCT theologies). If you could go back to 50 years, you could assume smaller Baptist churches hold some type of NCT.
There was a time when seminary training was not trusted among Baptists because of things like Covenant Theology and even Dispensationalism. The idea was a Christian goes to seminary and comes out an atheist (an exaggeration, but many of the ideas created in the academic area did not quite match what people read in Scripture).
If you could go back 50 years we could also go to a Grateful Dead concert. So there's that, too.