Why are augmented 2nds not used in 4-part harmony?

1. What should be avoided in Four Part Harmony?
2. Which scale avoids the augmented 2nd interval?
3. Is augmented 2nd minor 3rd?
4. What is an augmented 4th chord?

What should be avoided in Four Part Harmony?

As well as that, each voice should be easy to sing, meaning that large intervals within the same voice are to be avoided, instead favoring step-wise motion. Voices should also not overlap: the pitch sung by the alto should not be higher than that of the soprano, and so on for the other voices.

Which scale avoids the augmented 2nd interval?

Minor scale—'melodic' form (semitones 2–3, 7–8 ascending; 6–5, 3–2 descending; this avoids the interval of the augmented 2nd while allowing the leading note to retain its function of 'leading' to the tonic).

Is augmented 2nd minor 3rd?

In classical music from Western culture, an augmented second is an interval that, in equal temperament, is sonically equivalent to a minor third, spanning three semitones, and is created by widening a major second by a chromatic semitone.

What is an augmented 4th chord?

The augmented fourth (A4) occurs naturally between the fourth and seventh scale degrees of the major scale (for example, from F to B in the key of C major). ... Supertonic chords using the notes from the natural minor mode thus contain a tritone, regardless of inversion. Containing tritones, these scales are tritonic.