What are the reccomended keyboards to use for Music Maker 2015. Looks like Magix sells a keyboard in the UK but not in the USA. Why is that? Anyway, what keyboard would work well with their software?
Actually, any keyboard that has a midi out to USB and audio out should work fine with MMM. You may need an ASIO driver like ASIO4All.
The keyboard that you choose should be one that has all of the features that you want. I prefer one with at least 76 keys, you may prefer more or less, it's up to you.
Take a look through the Q&A part, filtering for Music and maybe Equipment categories and you will see that people have been connecting keyboards from many manufacturers, such as Casio, Akai, Rolland, etc.