The product is a 3-pack of vintage sheet music from post-1920, measuring 9x12 inches. This collection is specifically focused on musicals and is geared towards advanced experience levels. The sheet music offers a nostalgic look at classic musical scores and is a valuable resource for musicians looking to play iconic tunes from the past. With a variety of songs and musicals represented, this 3-pack is a must-have for collectors and enthusiasts alike.