Music I listen to when Developing and Fixing Bugs is......
Well this is an interesting topic, lets see I usually create a Playlist with about a 100 hours of music, this is totally random, and as such selections as Metallic, Floatsam & Jetsam, Pantera, Judas Preist, AC/DC, Dio, Warlock, Helloween, System of a Down, Megadeth, Gamma Ray, Testament, Overkill.
Then we have some lighter tracks such as the music of Ennio Morricone, and the Soundtracks of the Lord of the Rings Trilogy.
Don't know why but these just help me keep going.