It’s The Most Wonderful Time of the Year (Andy Williams) Big Band 5444+ with Vocals. Custom arrangement for vocal solo (baritone), SATB choir, piano, bass gtr., drums, guitar, flute 1, flute 2, clarinet 1, clarinet 2, tenor sax, 2 horns, 3 trumpets, 3 trombones, tuba, glockenspiel, chimes, 4 trumpets and 4 trombones. This is based on the original Andy Williams version (Key of D). This Big Band Version comes in both the key of D and the key of Bb (for alto solo). You will receive both versions at purchase.
Note that there are many other options of this title available including, Small Orchestra, small horn group, and Full Big Band. But all of these are in the key of D.. There are also SATB rehearsal tracks available separately that will work with all arrangements in D. Be sure to check out the audio midi of this arrangement. The sample audio is in the key of Bb. Also note there are no drums on the midi audio sample.