Choral Choir,Choral (SSA) - Level 2 - Digital Download SKU: A0.1314956 By Sia. By Greg Kurstin and Sia. Arranged by Matthew Udland. 21st Century,A Cappella,Barbershop,Christmas,Pop. 8 pages. Midwest A Cappella #903705. Published by Midwest A Cappella (A0.1314956). This sweet winter song is PERFECT for your high school or collegiate treble group. It's got a lovely lilt and the arpeggiated piano from the original is spread across the voice lines making it a good counting exercise. Easy to add vocal percussion, but not necessary. The solo works best for a strong alto.