How many movies have Cyndi Lauper and Joni Mitchell acted in together?

They have worked on 3 movies together! Their first movie together was Roger Waters: The Wall—Live in Berlin (1990) while their highest rated movie together was Joni Mitchell - The Library of Congress Gershwin Prize For Popular Song (2023). They have not worked together since Joni Mitchell - The Library of Congress Gershwin Prize For Popular Song (2023). They are most known for their music films together.