Amazon is giving away free MP3s.
Naturally there's a catch. It's this - you must have bought the music from Amazon at some time in the past, either in digital or physical form.
The idea is to promote Amazon's newish cloud player, a service that lets you access your music from any internet-enabled device. Amazon hope that once you've sampled it, you will be tempted to add your own music to the cloud player - for which there is, guess what, a storage charge.
If you have an Amazon account, it's easy to check whether you have any free MP3s waiting for you.
Either open the cloud player here, or if that doesn't work go to Amazon's MP3 downloads page and select 'Launch cloud player' from the menu on the left. Sign in when prompted, and your purchases will appear. It may take a few minutes. You can then play the music directly from the cloud player or download to your computer.
I didn't think I bought that much music, but I found 61 albums, a total of 1444 'songs', going back years. These included CDs I thought I'd never see again - lost, damaged, given as presents, left in hotel rooms, and so on. It also - probably unintentionally - gave me a couple of whole albums from which I'd only bought the odd track.
There are a few things the cloud player doesn't pick up, including purchases marked as 'gifts' and items from third party sellers. It also appears that if Amazon don't sell the MP3, you won't find it on the cloud player. Annoyingly, most of the more obscure classical items fall under this category. As they tend not to turn up on Spotify either, the art of ripping may not be dead yet.