Good Morning Girl / Stay Awhile by Journey.
Vocally, it doesn't get much better than Perry from '78 - '81. I can put these two songs (they are short, so I count them as one) on a loop and listen over and over through head phones. The Orchestral score, the crescendos, the vibe... Simply amazing.
This link has the guitar solo "Departure" before it, just as on the album.