Zach West (Facebook photo)
The Musical Circuits Curriculum website, offered by Colorado musician Zach West, offers instruction in what West calls I2C2 Music, with lessons in four circuits for kids and lessons in eight circuits for adults. (The I2 stands for "Intelligence Increase" while the C2 stands for "Creativity Cultivation.") Lessons cost $35 for a half hour sessions, $60 for an hour and $400 for a Musical Circuits package for adults. More here.