Original sentence: In jazz, the descending aeolian is disregarded altogether.Particularly, to use the triad of the relative major - which is very common - since this is based on the third degree of the minor scale, the raised seventh degree would cause an augmented triad; composers thus frequently require the lowered seventh degree, that which is found in the natural minor
Edited sentence: But in jazz, the descending aeolian is disregarded altogether.Particularly, to use the triad of the relative major – which is very common – since this is based on the third degree of the minor scale, the raised seventh degree would cause an augmented triad; composers thus frequently require the lowered seventh degree, that which is found in the natural minor