The document discusses scales and scale degrees in music. It provides the formula for constructing major scales, which uses whole and half steps in a specific pattern of tones and semitones. The C major scale is presented as the simplest example. Minor scales are also discussed, with the formula using a different pattern of whole and half steps. Scale degrees are introduced, with both numbers and specific names assigned to each note in a scale. A mnemonic is provided to help remember the names of the scale degrees from tonic to leading tone.