And which musical piece is named for its length? What else is special about it? What's the name of its composer and which computer-game character was named likewise?

Actually, yes.
One can't expect me to read the whole Moose, yet posting this so close to the initial reference is a true embarrassment. You have my eternal apologies, then.

A funny bit about that piece is that 1. it actually appears on audio recordings, and 2. some people can actually argue about the interpretations of different performers of those recordings.