hi Jonas (KN_Fan):
From the information you gave, it all sounds a little vague. I'm not sure about this particular guy, but I've run in to many so called 'big shot' producers (a dime a dozen) who've bragged (hot air) that they have the right connections to get me terrific bookings, etc. The most IMPORTANT first step is to first find out from the guy what music genre (style) his band plays and exactly what type of band member (keyboardist, singer, backup singer, instrumentalist?) he's looking for. If your background/experience then appears to match his expectations, then offer to give him your demo CD, or a 'live' audition. This avoids wasting both your time as well as a wasted demo CD & promo package which could be given to another more suitable client. I also don't recommend discussing contracts or $ at least until you find out what he really wants & he knows what you have to offer. Only then will you have any power to negotiate.
btw: Keep your demo CD & promo kit as up to date as possible. This should include a resume sheet which lists your music experience (past gigs/performances, studio production projects, & a music genre/set list summary).
I believe the 3 MOST important things a potential music employer looks for 2nd only to your "musicianship skills" are:
1) Your Track record for being 'on time' (dependability).
2) Ability to work well with other band members as well as good rapport with the audience
3) Appropriate stage attire (appearance)
Jonas, please keep us posted. Good LUCK !
Scott