Sound recordings sold through a tangible medium which takes up physical space and not through a digital audio transmission. Examples include CDs, vinyl, cassettes, etc.
The New Formula for Success in the Music Business
The old method of promoting a new act in the music business was for a record company to invest at least $500,000 in studio time with a good producer, the cost of a good video, the advertising budget, and the cost of the first promotional road tour.