Rapper Lil' Wayne has admitted he can't read, instead citing that his musical prowress comes naturally to him. While this may work for the musician, most piano players, singers, and sax players can benefit from a lesson in music theory or two.
We know that just the term "music theory" is probably already making you yawn. Music theory definitely isn't as interesting or as fun as playing the actual music itself, but trust us when we say that your skills will improve greatly if you actually pay attention.
Check out this piano music theory video to learn the Tetra effect, pentatonic scale, and whole tone scale.