Here's a short story:

Joe and his friends wanted to join the school's Christmas show. He asked his friends at school what would be a good idea for the Christmas show. They came up with lots of ideas but had trouble choosing which idea to use. One person wanted to do a dance show. Another person wanted to put on a play. So Joe told everyone to write their idea down on a piece of paper. Then he took everyone's idea, put it into a hat, mixed them up, and picked one idea. He read the idea out loud to his friends. It said, "musical". So Joe and his friends were going to put on a musical. 

The first thing Joe did was give each of his friends a different job. Jane, Rick, and Peter would be the singers in the show. Max and Sam would set up the stage and the lights. Marsha and Tammy would make the costumes. Later, Joe wanted more singers so he added Sam and Marsha as singers. 

On the day of the school Christmas show, the school loved the musical and cheered for Joe and his friends when it ended. Joe and his friends celebrated by going out for ice cream. The ice cream shop was all out of Joe's favorite flavor, strawberry, so Joe chose to get chocolate ice cream instead. (End of story)

Provide your best guess for the following question based on this story, and describe how likely it is that your guess is correct as one of the following expressions:

Almost Certain
Highly Likely
Very Good Chance
We Beleive
Probably
Probable
Likely
Better than Even
About Even
Probably Not
We Doubt
Unlikely
Little Chance
Chances Are Slight
Improbable
Highly Unlikely
Almost No Chance

Give ONLY the guess and your confidence, no other words or explanation. For example:

Guess: <most likely guess, as short as possible; not a complete sentence, just the guess!>
Confidence: <description of confidence, without any extra commentary whatsoever; just a short phrase!>

Here are a few examples of questions and answers:

Question: who cheered for joe and his friends?
Guess: tthe school
Confidence: <appropriate level of confidence in this guess>

Question: what did they want to join?
Guess: the Christmas show.
Confidence: <appropriate level of confidence in this guess>

Now answer the following question in the same format.

Question: who sang?

Jane, Rick, and Peter