wiki explanation: https://en.wikipedia.org/wiki/Musical_quotation

Covers relationships between works (or recordings) that directly "quote" musical parts of other works, while being distinct from "covers", "based on", "samples", "variation/arrangement of", etc. "Based on" generally implies the entire work is based on another, while "samples" uses the original recording. This may include lyrics as well, but should only be used if intent is obvious & specific- perhaps "refers to" would be better suited for lyrics that mention, but don't actually quote verbatim, other works (i.e. The Beatles' "Glass Onion" refers to "Strawberry Fields Forever", "I Am the Walrus", etc., Megadeth's "Victory" similarly refers to multiple earlier Megadeth song titles). Or maybe make that a sub-checkbox?

If recording-work ARs are included, there should probably be some criteria to determine when to use 'quote' versus 'partial cover of' (most likely length of quoted work, e.g. a single riff/line would use 'quote' where a verse/chorus or more would be 'partial cover' or 'medley').

Musical Examples:

• "I Want a New Drug" by Huey Lewis and the News quotes "Purple Haze" by Jimi Hendrix (in guitar solo near end of song)
• "Eine Kleine Nichtmusik" by P.D.Q. Bach is
  • based on "Eine Kleine Nachtmusik" by W.A. Mozart
  • quotes "Turkey in the Straw" by [traditional
  • quotes "Concerto for Piano and Orchestra no. 1 in E-flat major, S. 124" by Franz Liszt
  • quotes "Symphony no. 3 in F major, op. 90: IV. Allegro" by Johannes Brahms
  • etc.

Lyrical examples:

• "Intergalactic" by Beastie Boys quotes (refers to?) "The New Style" by Beastie Boys (lyrics "the beat... mmm, drop")
• "Glass Onion" by The Beatles
  • refers to "Fixing a Hole" by The Beatles
  • refers to "I Am the Walrus" by The Beatles
  • refers to "Lady Madonna" by The Beatles
  • refers to "Strawberry Fields Forever" by The Beatles
  • refers to "The Fool on the Hill" by The Beatles

So this comes up in more searches, keywords: leitmotif, theme