It was written and performed by Jim Johnston. He has been the guy who creates most of the theme songs in WWE for the past couple of decades.
Saliva wrote Bastista's song.
Bret Michaels, Pete Evick, Lucky Chucky, Dirty Ray and Robi W.
POISON
Bret Michaels gets $64,000 a night even without Poison
The artist of DX entrance is The Chris Warren Band
Real Life was the band who wrote that song.
Alter Bridge sing Edge's entrance song.
No band wrote this song it was wrote by Ed Drewett
Edge comes to the ring to Alter Bridge's Metalingus.
Metalingus by the band Alter Bridge
The band Poison, fronted by Bret Michaels.
Bret Michaels was the former lead singer of Poison