One dirty trick which is used is to include something like "absolutely no copying" including for "education or personal use", which is not really true, because fair use permits limited copying. So that's an example of a non-legally sound clause.
The right to perform a work publicly and restrictions on those public places (e.g. as a studio I could license a work to be played publicly in a specific movie theatre) is one of the seven rights which are built-in to copyright law, so such restrictions are, in fact, sound.