http://www.ppluk.com/ PPL (Phonographic Performance Limited) are separate organisations who license different sets of rights in the use of music. PPL licenses the use of recorded music where played in public, broadcast on radio or TV, or used on the internet, on behalf of record companies and performers.
https://www.prsformusic.com/ PRS
Performing Right Society (PRS) and the Mechanical-Copyright Protection Society (MCPS). PRS collects when its members’ works are performed or communicated to the public. MCPS collects when its members’ work is copied.
An ISRC Code is an International Standard Recording Code ISRC, a 12-character, alphanumeric code that is assigned to a piece of music set for commercial release
An ISWC (International Standard Musical Word Code) is a unique code assigned to a specific musical work or composition written by the songwriter(s).