The product is a sheet music collection titled "American Rock & Roll - Volume Four" published by Creative Concepts in the United States. It is designed for intermediate level musicians and is suitable for a jazz ensemble ensemble. The sheet music includes arrangements for instruments like acoustic guitar, piano, accordion, electronic keyboard, bass guitar, electric guitar, and organ, catering to the rock genre. This collection offers a variety of music pieces in full score or piano score format for musicians looking to explore and perform American rock classics.