Blanket licenses are a type of license allowing one to use all the compositions covered under the agreement with no limit on use for one payment (usually annual). most commonly refer to licenses issued by performing rights organizations (PRO) to licensees (restaurants, bars, clubs, etc.) who wish to use the entire catalog of a PRO.

The Evolution Of The Electric Guitar
The first electric guitars were made in the 1930’s in response to a demand from guitarists in bands whose rhythmic stylings could not be heard above the other instruments.