A friend was looking for the circle-P character to include on the jacket design for a musical recording. I was surprised to discover a glyph/character that I wasn’t aware of. We weren’t even sure what this symbol meant in relation to the copyright symbol. Turns out this symbol, the Phonogram Copyright Symbol or Sound Recording Copyright Symbol, protects the copyright of the sound recording itself as something separate from the written music and lyrics. Good things to know!
Regardless, this character can now be found in my ever-growing HTML Character Code tool. Enjoy!