Which organization is responsible for licensing composers' rights for public performances?

The correct choice pertains to the organization primarily responsible for licensing composers' rights for public performances, which is PRS, or the Performing Right Society. This organization specifically focuses on collecting and distributing royalties to composers, songwriters, and publishers when their music is played in public settings, such as concerts, broadcasts, and other media platforms.

PRS operates by ensuring that when a piece of music is performed publicly, the copyright holder is compensated for the use of their work. It plays a crucial role in the management of performing rights and acts as a representative for its members, allowing venues and broadcasters to obtain the necessary licenses for public performances efficiently.

The other organizations mentioned serve different functions within the music industry. For instance, PPL (Phonographic Performance Limited) deals with the rights associated with the performance of recorded music, while MCPS (Mechanical-Copyright Protection Society) focuses more on mechanical rights related to the reproduction of music. Agency International is not specifically oriented toward music performance rights, making PRS the most relevant choice for this question regarding public performance licensing.