The difference dances that the characters learn are:
Rock and Roll. Rock and roll is a genre of popular music that originated and evolved in the United States during the late 1940s and early 1950s.
Social foxtrot. The foxtrot is a smooth, progressive dance characterized by long, continuous flowing movements across the dance floor.The American Social Style was, and to some extent still is, widely employed in the United States as a social and party dance. It is particularly well suited to dancing in a crowded room, by partners who may or may not know each other well, and who may or may not have had much formal training in dance.
Cha-cha-cha. The cha-cha-chá, or simply cha-cha in the U.S., is a dance of Cuban origin. It is danced to the music of the same name introduced by Cuban composer and violinist Enrique Jorrin in the early 1950s. This rhythm was developed from the danzón-mambo. The name of the dance is an onomatopoeia derived from the shuffling sound of the dancers’ feet.
Tango argentino. Argentine tango is a musical genre of simple quadruple metre and binary musical form, and the social dance that accompanies it. Its lyrics and music are marked by nostalgia, expressed through melodic instruments including the bandoneon. Argentine tango is danced in an embrace that can vary from very open, in which leader and follower connect at arms length, to very closed, in which the connection is chest-to-chest, or anywhere in between.