Copyright Exists From Creation
Here's the good news: copyright protection attaches to your work the moment it's created in a fixed form (recorded to a file, written on paper). You don't need to register it for the copyright to exist. However, registration provides critical additional protections that make it worth doing.
Copyright Registration
In the US, registering with the US Copyright Office ($45–$65 per work, or cheaper for a group of unpublished works) allows you to sue for statutory damages and attorney's fees if someone infringes your work. Without registration, you can still sue — but only for actual damages, which are often hard to prove and rarely worth the legal cost.
The Poor Man's Copyright is a Myth
Mailing yourself a sealed envelope with your music on it does NOT constitute legal registration. This is an old myth. If you want legal protection, register properly.
Join a PRO
Register with a Performing Rights Organisation (ASCAP, BMI, SESAC in the US; PRS in the UK; APRA in Australia) as both a writer and publisher. This ensures you receive performance royalties whenever your music is played publicly — on radio, in venues, on streaming platforms. It's free to join most PROs and you're leaving significant money on the table if you haven't.
Keep Records
Maintain timestamped files of your work in progress — DAW sessions, demos, version histories. These serve as evidence of creation timeline if your copyright is ever challenged.
