My current music theory course is looking at string quartets - two violins, viola and cello, and I've been thinking of violas, which are the definition of "second fiddle" - so I did some searching for viola music and found this orchestral arrangement of Bohemian Rhapsody which I quite like. The viola is standing in for Freddy Mercury's lead vocals.
I also like how the orchestra handles the rock-out guitar bits at 4:35.