Is this sentence appropriate please?

I prefer:
The concert by the famous singer will start at seven tonight.

Do you mean "The concert of the famous singer will begin at seven tonight." is wrong?

Regards

No, it is not wrong, but I feel it's more natural to use "by" in your sentence.

Thank you for your help teechr.

You're welcome.

As I noticed:
You wrote "You're welcome.", What's the difference between you're welcome & you're welcomed?, I've taken passive voice in school and should welcome be welcomed..!

Thanks teechr

"You're welcome" is a standard English reply to "Thank you."

"You're welcomed" may work as part of a longer passive sentence.
e.g. "After you check into the resort, you're welcomed by the staff and shown to your room."

Mr. teechr,

Woo, thank you for your help and inf.

Best regards

I think it should be, ''After you check into the resort, you are welcomed by the staff and shown your room.''

"... shown to your room" is correct.