In which of the following situations would specific performance be an appropriate remedy. Explain your answer for each and discuss fully:

Thompson contracts to sell her house to Cousteau. Then on finding another buyer willing to pay a higher purchase price, she refuses to deed the property to Cousteau.

Amy contracts to sing and dance in Fred's nightclub for one month, beginning May 1, 2019. On April 20, 2019, she advises Fred that she has decided that she does not wish to perform.

Hoffman contracts to purchase a rare coin owned by Erikson, who is breaking up his coin collection. At the last minute, Erikson decides to keep his coin collection intact, and refuses to deliver the coins to Hoffman.