A lot of the time, yes. I have playlists for each WIP, with tracks chosen to fit moods or scenes. Plenty of metal in there (Rotting Christ, Windrose, Orden Ogan, Ensiferum etc), some Oriental folk metal (Suld, Nine Treasures, The Hu, Hanggai, Baifang) some Celtic folk (both rock and acoustic - Levellers, Skiltron, Alan Stivell, Dan Ar Braz), some Medieval-ish music (Faun, D'Artagnan, Salatio Mortis and their ilk), some Antti Martikainen fantasy soundtrack stuff. All chosen for characters, scenes, landscapes....
Silence for editing though. SSSH!