I don't see anywhere that is specifically says 8 songs will be included on the pro model. All they explicitly say about the pro model is that it is only for arcades and public places. Is yours in an arcade or public place? If not, I would say you are screwed. If so, you are not screwed but perhaps not getting the songs the Premium has. I say this sarcastically - do you believe and obey everything marketing tells you?Sory

Marketing... Marketing... Marketing. Talk about pro in the first line, then talk about premium and everything after that point is taking about the premium games. Lesson is... Buyer Beware. Ask questions before ordering and don't assume anything.

Sorry, not what everyone else is saying but there has got to be a lesson here somewhere.