A normal C major chord is C-E-G, but you can easily change it to E-G-C, called the 'first inversion', or G-C-E, the 'second inversion' - the bass note has changed, but it's still the same chord, with ...

A chord written with a slash means the first letter is the key chord and the second is the bass note. For example, D/A indicates the chord is D major and there is an A in the bass. This is known as a ...