<https://musicmotivation.com/shop/individual-cool-songs-pdf-mp3s/frequency-by-jerald-simon-studio-license/#product>
<http://schema.org/description>
"This COOL SONG is in the key of D Major. Try to figure out what the chord progression is for this COOL SONG. Notice how the piano has a warped techno-pop sound to it at the beginning until the piano part comes in on the actual piano. Have fun with this!"
<https://musicmotivation.com/shop/individual-cool-songs-pdf-mp3s/frequency-by-jerald-simon-studio-license/>