hi Sir GH!I think he might be very open, yet he could have favourite genres...
so i would feed him in first place with Under Pressure ehehe since he likes Bowie!!
then you should get from the Menheim 86 bootleg "immigrant song"
and put in the compilaiton also stuff from the 70s
a night at the opera, a day at the races, queen 2, queen, Sheer heart attack...
what do you think?
i thik if he has a weak for hard rock he will fall in love with Brian's riffs ;)

and The Hitman as bonus track ;)