What kind of music do fans of Heroes of Might and Magic like? (music genres)

So, here is the promised contest about Children of Bodom: 1) Name the reason why keyboardist Janne Wirman was replaced by another musician for the only time in the band's history. 2) Remember what the band was called before they came up with the name Children of Bodom. 3) The most difficult question. How many frets should your guitar have so that you can play the guitar solo from the song "Kissing the Shadows"? Good luck!