dialogue: Simon: Good afternoon.
  Freddy: Good afternoon, Simon.
  Simon: I heard from Barbara that you have a good singing voice and that she had asked you to sing at the school concert?
  Freddy: Well yes, she did. Obviously it's up to you, you are doing the music. Not every musician likes to jst perform with people he doesn't know.
  Freddy: It wasn't my idea, but if you are ok with we can do it.
  Simon: The only problem I have is that I can't see myself finding any free time in the coming week to practice and the concert is on Friday. Do you have backing tracks for the things you like to sing?
  Freddy: Sure, I can send you something.
  Simon: How many would you like to sing? 
  Freddy: I don't know, one or two, three at most.
  Simon: OK, then send me three tracks. Maybe it'll be possible for me to play guitar as you sing for one or two of the tracks, we'll have to see. 
  Freddy: That would be good. In the end live music is something a lot more special than just using backing tracks.
  Simon: I'll send you my email address and you can send me the attachments on that.
  Freddy: Will do. thanks.
summary: Freddy will sing at the school concert and send Simon 3 backing tracks.