Actually, I did consider this one - but you'd have to find an old serial to midi-box (or get an old Korg eg 05R/w which has a built in Mac serial port). Plus you'd have to find an old copy of CUbase or Logic etc..

If it was me I'd have good intentions but would probably end up with it in a cupboard, waiting for that monent to get round to doiing something about it..

..Like the the 10 Mac+ bodies I rescued from a skip