Original arrangement of "It's Beginning To Look A Lot Like Christmas" (by Meredith Willson) scored for SSATBB a cappella vocals. Every voice gets a chance at the lead throughout the piece. (S2 is noted as "mezzo" in this score.) Available through third-party vendor (see links below).
LEARNING TRACKS PACKAGE for this score (includes mp3 audio tracks for each vocal part plus one full mix track - 7 tracks total)