We will start by writing out the notes of three different scales, C major, F major, and G major. · If we wanted to build the C major pentatonic scale, we would. Musical scales are an essential part of music improvisation and composition. Practicing scales will provide you with the necessary skills to play different. The example below shows the beginning of the first movement of a piano In the C-major scale from Example 6–2, the step from E up to F is a half step.