Intervals are divided by half tones on the staff and keys. In the previous section, we learned that C to D and C to Db have the same degree, but specifically, C to D is half a step larger than C to Db
A major second interval is composed of two semitones, with C to D being a major second interval because it is a second on the staff and two semitones on the keyboard.
E to F is also a major second interval.
A major third interval is composed of four semitones, with C to E being a major third interval.
E to G # is also a major third interval
A pure fourth interval is composed of five semitones, and C to F are a pure fourth interval
F to Bb is also a pure fourth interval
A pure fifth interval is composed of seven semitones, with C to G being a pure fifth.
B to F # is also a pure fifth interval
A major sixth interval is composed of nine semitones, and C to A is a major sixth interval
Eb to C is also a major sixth interval
A major seventh interval is composed of 11 semitones, with C to B being a major seventh interval