Как из польки сделать вальс и марш??

В вальсе  и марше поменять размер  в вальсе размер 3/4 а в марше 2/4 или 4/4 , соответственно надо поменять такты чтоб подходило под размер и все)

Объяснение:

средства музыкальной выразительности : мелодика, ритм

mark and he are thirteen years old.and they are very sportly. they often go to the gym - at least three times a week. mark does exercises to make his arms strong. he can't walk because of a car accident, so he goes everywhere in wheelchair. but it doesn't stop him doing the things that boys his age want to do.