Before 10.5, Logic was strictly a linear tape-deck-style DAW. Live Loops turned Logic into a performance machine, similar to Ableton Live. You could trigger cells, record into the grid, and remix on the fly. Version 10.5.1 ironed out the launch-timing bugs found in 10.5.0.
If you previously downloaded Logic Pro 10.5.1 under your Apple ID, you can re-download it, even if you are on a newer machine (though you may need to downgrade your OS to run it).
If you want, I can produce a short step‑by‑step checklist tailored to your Mac model and current macOS version — tell me the Mac model and macOS version.
Note: Logic Pro 10.5.1 was released in May 2020. Apple does not provide direct public download links for older versions of software from their website. The only official method to obtain this specific version is through Apple’s software distribution system if you are entitled to it.
Let’s address the elephant in the room immediately. A simple Google search for "download Logic Pro 10.5.1" will yield hundreds of results from torrent sites, file uploaders, and YouTube videos promising a cracked version. Do not use these.
Here is why:
The only legitimate way to get Logic Pro is via the Mac App Store.