Get your phrase on with IV-V-I ("four - five - one")! IV-V-I is a music theory card game where players compete to form the best harmonic progressions with good voice leading and cadences. Style cards and part writing error cards introduce twists and turns that change game play entirely and force players to think about their musical strategy in order to score huge points and win.

IV-V-I serves as a playful and fun theory game that introduces western music harmony. With its unique use of symbols and gameplay, it is designed so that anyone can play - regardless of musical training!