WITH ODEN ON OUR SIDEDeath metal with some melody? Can it be? As evidenced by Amon Amarth's 2006 release, With Odin on Our Side, this dream seems to be a reality early on. On the album opening "Valhall Awaits Me," singer Johan Hegg's vocal lines aren't merely growled syllables. But don't be worried, longtime Amarth fans, it's not like the Swedish outfit has enlisted the help of Burt Bacharach to soften things up, as Hegg's vocals do resort back to the expected death metal