Write a question about the following article.

The music was n't really my type , but I have to say , I like the fact that the lead singer played a grand piano , and seemed to have a TON of energy during the set . Finally , Paramore took the stage , amidst screams of a couple thousand teenage girls . The sound was really quite good for an outdoor venue , and Haley , the lead singer of Paramore , had really good vocals for a live show . Paramore 's set was quite long , including all the hits from both their records , including a couple slower songs which I did n't expect to be played .

Question:
Why might I have not expected Paramore to play their slow songs ?
Options are: a. Because they were playing in a somber indoor venue where bands typically play somber songs .; b. Because they were playing in a festival environment where bands typically play a mix of songs .; c. Because they were playing in a festival environment where bands typically play festive songs .; d. None of the above choices .;