Greetings to you in the name of our Lord Jesus Christ! Invitation Letter to Choir - On behalf of the leadership here at (name of church), I wanted to take this opportunity to invite you and your Choir.I wanted to extend to you an official invitation to join the. Waupaca Community Chorus for what promises to be an enjoyable and memorable 57th. Concert. I am requesting your permission to approve the choir to attend the music concert to host. I am sending you this letter as a formal invitation to be a part of our praise and worship session that will be held during our Church Usher's Day. Now, first of all, our letter needs an introduction. Start your introduction with a polite and respectful greeting and introduce yourself. I am delighted to have your children in my class this year. This year, we are forming a Children's Choir.