CHORDAL
Chordal is a unique resource that teaches ear-training, theory, musical fluency, and context using hundreds of actual songs for guitarists, pianists, and bassists and other musicians. This context comes from using the Nashville Number System (replacing chords with numbers that correspond to their harmonic distance from each other in a musical key). Learning this language develops your ear to instantly recognize chord progressions for the vast majority of songs. Perfect for beginners or pros, kids or adults, any instrument or musical genre - anybody can benefit from Chordal.