Assuming you are referring to the PC version of any of the Music Maker versions - you have 2 options:
1. Download and install from the Internet via the built in wifi
2. Purchase an external DVD drive to connect to the Surface and the disc version of the software - the disadvantage is this does not allow you to try before you buy.
From the testing I have done with a Surface I found it to be a frustrating experience trying to run any programme that is not designed for the Surface ie the supplied apps or the apps available for the Surface.