Euphonium,Piano - Level 4 - Digital Download SKU: A0.1493004 By Kevin Birch. By 17th Century French. Arranged by Kevin Birch. Christian,Christmas,Classical,Early Music,Traditional. Score and part. 7 pages. Birch Music Online #1069694. Published by Birch Music Online (A0.1493004). This arrangement for Euphonium and piano is of the 17th Century French Carol of the Nativity Quelle est cette odeur agreable ( Whence is that goodly frgrance flowing.) There is an extensive Quasi Recitative section in the middle and there are optional extensions of the high range in parts.It is a beautiful melody for the Christmas season.