With traditional sheet music, you can see all the notes you need to play clearly in one place.
With this one, if your left hand is playing in lower octaves, and right hand playing in higher octaves, your eyes will have to move around a lot just to know which keys to push. This is in addition to moving your eyes around the actual keyboard to make sure you're hitting the right keys.
However, I do like the simplicity of using this system to learn a fairly basic song.
With traditional sheet music, you can see all the notes you need to play clearly in one place.
With this one, if your left hand is playing in lower octaves, and right hand playing in higher octaves, your eyes will have to move around a lot just to know which keys to push. This is in addition to moving your eyes around the actual keyboard to make sure you're hitting the right keys.
However, I do like the simplicity of using this system to learn a fairly basic song.