my advice
00:00-01:03 : Classical based on the music from Nightfall
didnt like it, it was a bit strange
01:04-02:05 : Dance based on Nightfall
lived it!, really great maybe its more my music but still really good
02:06-02:59 : Classical based on Factions
its better as the first one, but still no really dance ^^
03:00-04:40 : Dance based on Factions
best part great rythim, and nice base in the background
04:41-End: Dance and Classical mixed together blending both Nightfall and Factions together.
the 2 diffrent song together makes a really nice one
my advice, separate the 2 diffrent kind of styles, and make 2 songs!!!