C major is a very common key, and the C major scale is one of the first major scales you should learn. It is simple and easy, as major scales go, and used in a large number of songs and musical pieces.
The key of C major has no sharps or flats in it. In other words, the seven notes of the key are all the natural notes, the white keys on a piano. These are: C, D, E, F, G, A and B. This is a nice key for bass guitar because it includes all the open strings.
C major is the only major scale in this key, but there are scales of other modes that use the same key. A minor also uses all the natural notes, making it the relative minor of C major. If you see a piece of music with no sharps or flats in the key signature, it most likely in C major or A minor.
In this article, we'll look at how to play a C major scale in different places on the fretboard. If you haven't, you should take a look at bass scales and hand positions first.