To summarize, you now need a decent computer and an audio/midi interface. For those who have the computer, your total investment much is approximately $150. Possibly much much less. Next you need a Digital Audio Workstation. This is the software equivalent of a mutl-track recorder and mixer. These are programs such as Ableton Live, Pro Tools, Cubase, Sonar, Samplitude and others. These programs usually come from a couple of editions. The limited edition, and the whole enchilada editions. In…