What is Symphonic Metal?
1.
Simply the best subgenre of 
Some great symphonic metal bands include: Rhapsody of Fire, Therion, Symphony X, Nightwish, Kamelot, Angra, and more
See 
2.
A great genre of music thats so much better than that poor shitty gcyb genre.  Symphonic metal is metal with orchestral backgrounds.  Symphonic metal bands include 
I was listening to a stupid
Slipknot song and than my friend showed me a symphonic metal song byRhapsody and i was like, "Dang schmurrt, me no listen to shitty gcyb no more."
See