Copyright holders can issue a public license, its a unilateral document that states what people can and can't do with their work.
Its the core mechanism of Free and Open Source Software (FOSS) where the offer is usually an open invitation to anyone who accepts the conditions.
But the same mechanism could be employed but only granting rights to a specific person.

The self cleaning public toilets in my city always play an instrumental version of What the World Needs Now Is Love.
It feels like it must be an inside joke of some kind. The song, without its singer or lyrics, is relatively unremarkable.