[Suprised I didn't find a thread like this.]
You are placed on a small, single island. You are the only human being there. No chance to return. You'll be there forever. (Yay.) Through completely surreal and unnatural circumstances - that do not matter at all -, you are allowed to wish for 3 (already existent) releases of music.
Audio equipment variable/of your chosing. They don't need to be studio albums - they can be anything: remix album, live album, compilation, single, whatever. Yet box sets, overly long, ambiguous stuff is forbidden. Note: these don't have to be your favorites; really imagine yourself in that scenario, only being able to listen to these 3, ad infinitum.
Covers and longer explanations wanted.
Example
Nine Inch Nails - Pretty Eight Machine
Nine Inch Nails - Broken
Nine Inch Nails - The Downward Spiral
Obviously The Nine Inch Nails are the best band ever and I only ever listen to them. Though I only like the first 3 main releases, like, obviously. Easy choice. Get rekt.