Private copying refers to an individual making a personal copy of a recording, like a song or a TV show, for their own private use, such as copying music to a CD or a digital device.
While this act doesn't directly involve performance royalties, the tie-in with neighbouring rights occurs when this private copy is later played in a public setting, like a radio broadcast or in a retail store.
In such cases, the private copy transforms into a public performance under neighbouring rights, entitling the artists and producers to royalties for this broader, public use of their work.