Economic rights? Moral rights? Performing rights?
In short, copyright (or rights, for short) can be a real headache.
Whilst I encourage creatives to understand the rights vested in their intellectual property, getting one's head around these can take years. It's complicated stuff, but managing your catalogue of rights effectively is vital, particularly when considering cashflow and forward planning in your career.
If you have an ever-growing catalogue of songs/compositions and recordings, an independent audit of your rights and royalties is a logical first step to ensuring your catalogue is in order, permitting you to feel empowered that what is due to you is actually being paid out correctly.