U+2117 Sound Recording Copyright

The Wikipedia has the following information about this codepoint:

The sound recording copyright symbol or phonogram symbol, ℗ (letter P in a circle), is the copyright symbol used to provide notice of copyright in a sound recording (phonogram) embodied in a phonorecord (LPs, audiotapes, cassette tapes, compact discs, etc.). It was first introduced in the Rome Convention for the Protection of Performers, Producers of Phonograms and Broadcasting Organisations in 1961. The United States added it to its copyright law as part of its adherence to the Geneva Phonograms Convention in 17 U.S.C. § 402, the codification of the Copyright Act of 1976.

The letter P in ℗ stands for phonogram, the legal term used in most English-speaking countries to refer to works known in U.S. copyright law as "sound recordings".

A sound recording has a separate copyright that is distinct from that of the underlying work (usually a musical work, expressible in musical notation and written lyrics), if any. The sound recording copyright notice extends to a copyright for just the sound itself and will not apply to any other rendition or version, even if performed by the same artist(s).