Which term refers to creating a melody on the spot?
a. rhythmic composition
b. vocal improvisation
c. melodic contour
d. both a and b

Acurious child asked his mother: “mommy, why are some of your hairs turning grey? ” the mother tried to use this occasion to teach her child: “it is because of you, dear. every bad action of yours will turn one of my hairs grey! ” the child replied innocently: “now i know why grandmother has only grey hairs on her head.”