"Please accept our thanks for the music you provided to accompany our annual conference dinner. The evening was a great success, thanks in part to your professional musicianship. You sensitively provided the atmosphere we were trying to create with a tasteful and inventive dinner style jazz.
Your professionalism and promptness was appreciated and ensured we had one less thing to worry about in the conference's organisation.
We would certainly be pleased to recommend you to others for their events."