music’s infinite variability
All notes in music can be represented by twelve numbers, corresponding to the piano keys in an octave. Which octave you want needs another number. (Ignore microtonal music for this example : that would just need more numbers) A sequence of these numbers can then represent any piece of music, and there are an infinite number of possible sequences using this small number of notes. Therefore they could just have said "the infinite variability of sequences of a small set of numbers". I wonder why they didn't?
I should also like to point out that numerous US businesses that try and appeal to the less sophisticated with royalty-associated names, have been known to sell goods which are not of the quality that would invite sufficient custom in a UK "pound shop".