The product is a vintage and antique sheet music titled "Feist Dance Folio No. 12: 30 Dance Hits for Piano" published by Leo Feist Inc. in the United States. This sheet music collection includes 30 dance hits for piano, with a focus on jazz and waltz genres. It is a unit sold individually, suitable for musicians looking to play classic dance tunes on the piano. The Feist Dance Folio No. 12 offers a nostalgic and comprehensive collection of music for piano enthusiasts and collectors alike.