Big fan here, got H to He when it first came out. Find similarities between Peter Gabrial's vocal style and Peter Hamill's.
A more recent and simila americanr band - Discipline 'unfolded like staircase.
I just discovered Van Der Graff Generator...
An interesting experimental British band from the 60s and 70s. Their music is interesting, however they're not for everyone. Please give them a try and let me know what you think.
Thanks.
PS... you need an open mind for this band.