Not so, TheGodThatFailed
I know Dragonheart was the name of Dragonforce (which I think is a silly name, btw lol)
Dragonheart is an operatic sort of power metal act out of Brazil.
http://www.dragonheart.com.br/english/historia.html
If you've been to Dragonforce's website, they said they changed their name to not be confused with movies, other bands, etc. This is that other band, and I think they rock [img]smile.gif[/img]
Hall of Dead Knights, Battlefield Requiem, and Gods of Ice are pretty representative of what they do if you get a chance to listen to some. Their songs usually have one thrash riff, 2-3 melodic power riffs, and one ugly one that makes you think "Why did they do that there?" It's all overlaid with a powerful chorus. The melodic parts get you humming hours later though