In the 1970's and probably into the 80's - ABC used to run short animated segments between its Saturday morning kids programs called Schoolhouse Rock (or Grammar Rock, or other titles that ended in "Rock"). They managed to be educational and entertaining - something today's kids programming seems incapable of being.
Some of the songs were so memorable, that I still hum them today - 30+ years later. I was reminded of this one - "Unpack Your Adjectives" today while doing a look-up of its vocalist Blossom Dearie. Dearie was most famous for singing jazz standards, but did a handful of these for ABC - all quite nice.
So enjoy the song, but be prepared to hum it for the next few decades or so.