Hi Gerardo,
I forgot about this big beast, of course you had it on your capable hands already
.
A couple of years ago I was working on a KLM B747-300, must have been about the same scale. I remember having trouble with the tail section as well, and then later on with the engine/pylon assembly and to make them fit to the wings properly, and last but not least attaching the wings "flawlessly" to the fuselage. On top of the problems with the cockpit section (one of the segments was slightly too big and consequently did not match properly) and the off-color blue of some segments I finally decided to combine its maiden flight with a one way ticket to the bin. End of the story, so I'm glad you still have found your way out of problems encountered up so far.
Regarding music, I'm more of a prog fan. The old Genesis, Pink Floyd, Steve Hackett, that kind of stuff. And on the more recent side, Steven Wilson. "You won't regret listening to Regret #9".
Good luck with continuing this Aluminium Maiden!
Cheers,
Erik