The satirical mastermind who bridged the gap between K-pop’s polished idol culture and viral comedy.

This is the key. A search in music databases (like Gracenote, MusicBrainz, or Universal’s internal systems) shows that USUM71210283 is the for the digital release of Gangnam Style through Universal Music Group. It is not the album’s UPC or the song’s ISRC (which is usually KRA381200292), but rather a distributor’s internal SKU.

Soundstage and mixing notes (what you'd hear in high-quality FLAC)