Roy Orbison - Southbound Jericho Parkway (1969)

When the words "experimental psych" come into one's head, there's a good chance that Roy Orbison is not the first person associated with them.  But this 7-minute epic shifts styles, themes and genres in an innovative way.  Why it was an A-side is something to ponder - it would have shattered the glass ceiling of 3 minutes for a hit single (though this unwritten statute was becoming more lax when this was released in 1969).