Dear Ana,
I'm writing you this letter to invite you to the concert.
It will take place in the town centre, near the city hall. The concert will start at 8:00pm and it's about 3 hours lenght.
There will be famous singers like Rihanna, Madonna, Lady Gaga, 50 Cent.
I will call you 10 minutes earlier. I hope you will be there and you will have a great night.
Give your best wishes to your parents.
Best wishes,
Alexandru