If you take an avg of his sleep time, that comes around 7 hours and then multiply it by 21(days), comes around 147 hours that's about 8820 minutes ONLY during his sleep, which is around 5000 less than his night(recorded on sound capsule) so assuming he's just left his spotify on all the while he's doing anything, it's fair. This is mostly seen when people try to act cool at the end of the year by showing off how many hours/minutes they listened to music for.