Christmas Trios I - Arranged for 2 trumpets and trombone. Angels We have Heard On High; Deck The Hall; Lo, How A Rose; O Come, O Come Immanuel; O Little Town Of Bethlehem; Silent Night; The First Noel; What Child Is This? Most of the arrangements in this book will work with the Christmas Trios I for strings book, creating nice ensemble arrangements for church or community performance. Case Studio Productions, the publishing arm of Case School of Music, is committed to developing and publishing quality music for educational and instructional use and personal enjoyment.