I'm posting to "sforzando" because I recognized the music: it's from the first movement of Beethoven's Fifth Symphony.

But I got sidetracked by the alphabet sentences. I still think the best is "Pack my box with five dozen liquor jugs," but here are a few others:

Wet squid's inky haze veils sex of jumping crab
Oozy mad jellyfish expectorated by quivering hawk
Exildes zouave packs barque with jolly frogmen
Jackdaws love my big sphinx of quartz
Doxy with charming buzz quaffs vodka juleps
By jove, my quick study of lexicography won a prize