You’ll see slash chords on chord diagrams, written as C/E (“C chord over E”), G/B (“G over B”) and all variations in between. The slash indicates that your right hand chord is different than what you are playing in the left hand. C/E means your right hand is playing the C chord while your left hand plays the E note. G/B means your right hand is playing the G chord while your left plays the B note.
There are lots of examples of slash chords being used, but in this tutorial we examine the slash chords in Billy Joel’s Piano Man and the Totoro Main Theme Song.