World's Greatest Grandma - S1-E13
Other mistake: A six-piece band of grandmothers is playing "When The Saints Go Marching In" at a school talent show. None of the piano keys move when the pianist taps them.
Life with Lucy (1986)
1 other mistake
Starring: Lucille Ball, Gale Gordon, Ann Dusenberry, Larry Anderson
Genres: Comedy
World's Greatest Grandma - S1-E13
Other mistake: A six-piece band of grandmothers is playing "When The Saints Go Marching In" at a school talent show. None of the piano keys move when the pianist taps them.