This is "Joy to the World" inspired by Mariah Carey as she sings it on her "Merry Christmas" recording.  This is arranged for SATB choir, strings, and horn section (3 trumpets, 3 trombones, 5 saxes) There are woodwind sub parts for the strings.  This is a great driving gospel rendition of a classical.  The choir parts are easy to learn.  Mariah's ad lib vocals are not written out.