on a basis of two-beat units, or into
on a basis of three-beat units.
The persistence of these simple equivalences appears also in the treatment of syncopated measures and of supplementary or displaced accents. Of the form
one reactor says, and his description may stand for all, "This deliberate introduction of a third accent on the last beat is almost impossible for me to keep. The single group is easy enough and rather agreeable, but in a succession of groups the secondarily accented third beat comes against the first of the next group with a very disagreeable effect." This is the case where no pause intervenes between the groups, in which case the rhythm is destroyed by the suppression, in each alternate simple group, of the unaccented phase; thus,
alone is pleasant, because it becomes
, but in combination with preceding and succeeding groups it is disagreeable, because it becomes in reality