What is a P Line?

In music metadata, a "P Line" typically refers to the "Phonogram Line." The P Line contains information about the phonographic copyright of a recording.

It includes details such as the year the recording was first published, the record label or company that holds the phonographic copyright, and sometimes additional copyright or licensing information related to the sound recording.

The P Line is important for properly attributing ownership and rights to specific recordings, especially in digital distribution, licensing, and royalty collection processes.