Could a windows version of Cubase 7 Artist work on a MacBook Air?
Theoretically, yes, of course. You would need to run Boot Camp w/ Windows on the MacBook Air, and make sure you meet the minimum spec requirements for Cubase (http://www.steinberg.net/en/products/cubase/specs_downloads.html), but it should work. MacBook Airs run Windows pretty well, although make sure you are updated with the MacBook Air EFI Firmware, etc… there are some known issues. But in theory it should work. Now, how well Cubase will ultimtely work, I can’t say. But it could be worth a try if you require Windows. Those little recent MacBook Airs are rather nice machines, running either Windows or OSX.