![]() Next look at the 5th in the G major scale: the note is D natural. When an interval is wider by one semitone (half step) than the one found in the major scale, then the interval is augmented.įirst, work out the interval number: count up the letter names (ignore any accidentals). Instead, it will be augmented, minor or diminished. If the upper note in an interval is not part of the major scale built from the lower note, then the interval cannot be major or perfect. So, in order to understand intervals, it is essential that you are confident in your scales! (Notice that there are four of each kind). Major intervals are the 2nd, 3rd, 6th and 7th, and perfect intervals are the unison, 4th, 5th and octave. If the lower note of an interval is G, and the upper note is one which exists in the G major scale, its quality will be either major or perfect. Look at the scale of G major, where G is the tonic (keynote). You can think of "major and perfect" as the kind of "default intervals". If you take a major scale, all the intervals which are built from the tonic of that scale are either major or perfect. We will look at each of these interval qualities in more detail. There are 5 quality names which are: perfect, major, minor, augmented and diminished. This is the wrong answer!Įach interval has quality name which goes before it, for example “ major sixth”. Starting on the first note (G), we count the letter names to the second note (C), G-A-B-C =4, which gives us a 4th. What is the following melodic interval?įirst, the correct way: starting on the lower note (C), we count letter names to the higher note, (G), C-D-E-F-G =5, which gives us a 5th. What happens if you try to calculate an interval by starting with the higher note on the stave? You will get the wrong answer! This is a common mistake, so let’s look at an example of what can go wrong. Starting on the Higher Note - a Very Common Mistake! If the letter name is the same, the interval will be either "unison" (the same note), or "octave" (the next one up or down). To find the number of an interval, first find the note names of the two notes, (ignore any sharps and flats for now), and count the letter names, starting with the lower note on the stave. “Melodic intervals” are read horizontally and are found in melodies, whereas “harmonic intervals ” are read vertically, and are found in chords. Each interval has a number and a quality, which you have to know for Grade 5 Music Theory. An “interval” is the distance between any two notes.
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