No, they don't.
they have said they inspire eachother.
They did, they write all their own music.
The bible influenced Avenged Sevenfold to name their band Avenged Sevenfold, as it is based on Genesis 4:15. It also inspired them to write their songs Chapter Four, The Wicked End and The Beast and the Harlot.
Dear god, but i not exactly.
no, the band my chemical romance did :)
Not exactly. He helped write the piano part, but he did not help write the lyrics.
Yes, Avenged Sevenfold writes their own music. M. Shadows writes most of the lyrics, while Synyster Gates, Zacky Vengeance and Johnny Christ write the guitar parts. The Rev. has written all the drum parts for the albums up until Nightmare, as he passed away after writing his parts for that record.
No. Bring Me The Horizon just covered the song.
Avenged Sevenfold writes songs about dying and going insane because many people can relate to those sort of things. Because almost everybody knows someone who has died or gone crazy.
No, Johnny never wrote any full length song for Avenged Sevenfold. It is very likely, however, that he wrote the bass parts for most of the songs. Please note that Johnny wasn't in Avenged Sevenfold from the start, so some of the bass parts were written by Daemon Ash, A7X's bass player before Johnny joined.
First they start with Riffs (guitar then bass) then drums then vocals
M. Shadows, along with the rest of the band, write most if not all of the their songs