Credits
Musical Intuition is built on work other people made and shared. These are the ones that ship inside it.
Piano samples
Piano samples: Salamander Grand Piano by Alexander Holm, SFZ remap by kinwie (CC BY 3.0) — https://github.com/sfzinstruments/SalamanderGrandPiano
Adapted for this site: individual note recordings from that library were rendered offline into the chord recordings the drill plays.
Word frequency data
Word frequency data: hermitdave/FrequencyWords (CC BY-SA 3.0) — https://github.com/hermitdave/FrequencyWords