Today is Dewey Decimal System Day. Who knew? (I didn't until I read Jenn McKinley's post today at https://www.jungleredwriters.com/2020/12/national-dewey-decimal-day-by-jenn.html) And evidently "The Dewey Decimal System Rap" is a thing. Who know? (Again, moi. I am seriously uninformed.)
Anyway, here are "two talented teachers" who mixed the "Melvil Dewey" (Scooter Hayes) rap song with Maclamore's "Thrift Song" to come up with this salute.
BTW, the original Melvil Dewey (December 10, 1851- December 26, 1932) was an American librarian who invented the system when he was 21.