Most of these are Christian but I know some good non-Chrstian bands (NC) means non-Christian
Rock:
Switchfoot
Black veil brides
kiss
ac/dc
Screamo:
neil perry
saetia
the saddest landscape
alexisonfire
The best screamo bands according to fans are Pierce The Veil and Black Veil Brides. However, screamo in Brazil is a lot like screamo here in the US. We listen to the same type of bands.
Scars to Stain the Skin. :D
rammstein, blonk, callejon, narziss, welcome karen, and myra are good bands
I am more of a J-pop fan but I do like some Japanese Rock bands. Some good ones are: Alice nine The GazettE Flow Gravitation Puffy AmiYumi (LOL I know) More screamo-like: Dir en grey Maximum The Hormone
Some good melo death bands are children of bodom, in flames, and norther. Belphegor, ensiferum, amon amarth, and lordi are also good
Here are some heavy screamo bands: Saosin, Alesana, A Skylit Drive, Alexisonfire, Emarosa, Dance Gavin Dance, Through Arteries, Drop Dead Gorgeous, Chiodos etc.
Dear E.M.M.A and Famous Last Words-Staring over
Flyleaf in their song I'm So Sick, the girl does some screamo
there is crank that calveryboy by ismfof
Most of screamo bands aren't satanic. Well I'm a fan of screamo and I've never found out that there is some satanic screamo band because even if they mention devil or Satan in some songs it doesn't mean they're worshiping Satan. Most of them are normal Christians or Atheists.
A few examples of popular screamo bands are Taking Back Sunday, Escape the Fate, The Fall of Troy, Bring Me the Horizon, Heavy Heavy Low Low, Fear Before the March of Flames, and From First to Last.
Not really, because there are some "screamo" that isn't demented. No, Screamo is a type of music that anyone can listen to.