Day 01. Your favorite song

I enjoyed the first two entries in cpratt's meme. But I have a fairly limited knowledge of popular music, so I'm going to slightly change it to suit what I know. My favorite piece of music: Beethoven String Quartet, Opus 130, 3rd movement    Runner up: Mahler Symphony No. 9, 1st movement          This is maybe a better performance of the Beethoven movement. And this a more visually interesting performance of the Mahler.