The product is vintage sheet music for "Blue Champagne" from 1941, featured by Glen Gray & the Casa Loma Orchestra. This sheet music is for piano and voice, in the genre of popular music. Published by Encore Music Publications, Inc. in the United States, it is a unique and collectible piece for music enthusiasts and collectors. The sheet music captures the essence of the era and the musical style of the time, making it a valuable addition to any vintage music collection.