Dear Mark,
Thank you for your letter. I understand that you are not happy about the idea of going to a classical music concert. To tell the truth, I'm not very excited about it too.
As for my music preferences, I like pop music more than classical music. If I have to choose a singer's concert, I would like to visit Dua Lipa's concert.
Unfortunately, I can't play any musical instrument, but I have always dreamed of learning to play the guitar.
I hope you'll enjoy the classical music concert despite your feelings.
Best wishes,
[Your name]