Another rough simulation, this time its Body 13's 222th album, "People Come With Nets to Fish for Potatoes in the River", being around 13 YEARS LONG. (Yeesh, that's even longer than Like a Wall in Which an Insect Lives and Gnaws!) Although it isn't the longest track, it is the longest track as far as I know someone can listen to within a single lifetime, unlike Cow of Wretchedness's "/int_{0}^{\sqrt{x}} 2t \, dt = \frac{58008 \cdot \lim_{n \to \infty} \left(1 + \frac{1}{n}\right)^n {e}" which requires ~1.26582278e5498 human lifespans to listen to. Essentially this track is 287's younger brother, taking up around a perfect 13% of the average human lifespan (BoH's 210th track takes around 5%). Wow, everything about this track is 13, from the author, to the years you have to listen to, and to the amount of lifespan this takes up. I might also do Materialism Could Not Free Me From My Dread of Human Beings if I can splice it up into a hundred pieces.
Body 13 This simulation goes on for around ~10 years though, so yeah, its not super accurate.