The easiest way to transpose chords from a song into a different key using the chord number system also known as Nashville number system or Roman numeral system in classical music. This easy piano lesson will show you how to take a song in any key and easily move it into another key which is helpful when working with singers or playing in a band. These cheat sheets make it simple to find the new chords in your new key signature. This easy music theory piano lesson will help explain how to transp