Instrumental Duet,Piano Instrumental Duet,Piano,Trombone - Level 2 - Digital Download SKU: A0.622379 Composed by Tommie Connor. Arranged by Stephen DeCesare. Christmas,Standards. 13 pages. Exultet Music #3636445. Published by Exultet Music (A0.622379). The popular novelty Christmas song that describes a scene where a child walks downstairs from his bedroom on Christmas Eve to see the mother kissing Santa Claus under the mistletoe, has been freshly arranged as a duet for Trombone with Piano accompaniment. Accessible and appropriate for any school or concert setting.  .