Several come to mind...Lol. Here's a few from the 70's progressive rock genre...
'Flash'...featuring original 'Yes' guitarist Peter Banks. Great early 70's progressive rock band, but I could only handle their vocalist Collin Carter in small doses. Good thing many of their compositions were mainly instrumental. Once you get past his voice, the instrumentals are great by the way...
The Bishop:
http://www.imeem.com/people/iWsurYO/music/A8mJ7xNg/flash_the_bishop/
Manhattan Morning/Christmas '72
http://www.imeem.com/people/iWsurYO/music/0Ip3qYzF/flash_manhattan_morning_christmas72/
Dreams of Heaven:
http://www.imeem.com/people/iWsurYO/music/2YmGM-MG/flash_dreams_of_heaven/
Mid 70's US progressive rock band Pavlov's Dog also featured a vocalist who had the most distinct and original sounding voice I'd ever heard...but it still grated on my nerves...David Surkamp...
Song dance:
http://www.youtube.com/watch?v=1vhNwZ-nWZk
Natchez Trace:
http://www.youtube.com/watch?v=dvDE3eBlVHg&feature=related
Late November:
http://www.youtube.com/watch?v=slkBFgsE_g4&feature=related
Van der Graaf Genrator...I've always loved this band, but at times Peter Hammill's vocals are annoying...
Plague of Lighthouse Keepers Part 1:
http://www.youtube.com/watch?v=AzoaWrRYg98&feature=related
Plague of Lighthouse Keepers Part 2:
http://www.youtube.com/watch?v=mgPIHu10QxY&feature=related
Darkness:
http://www.youtube.com/watch?v=WDmhP6YiN6s