there's as many business models as there are businesses. from a music angle (but can apply to other content): Might be easier to look at your band as being within an 'ecosystem' of things that impact them, and things they can influence to get what they want. Try figure 9 & 10 (p.151-2) and maybe also table 27 (p.234) in this: http://researchbank.rmit.edu.au/eserv/rmit:4932/Daniel.pdf
if you're solely interested in digital music production try page 160, although that section is getting dated. The system doesn't change, just the variables in it. Thinking this way helps to put new technologies and businesses into context. Hope this helps (?).