“Weak song,” the converse of “strong song,” or tsuyogin, when referring to the way a melody of a chant is sung. While yowagin include many different types of singing styles, they are typically are more ornamented than tsuyogin, include complicated scales and are very beautiful, with great attention to melody. Yowagin are notated in chant books as yowaku, and are also known as jyūgin.