Simplify the following text for a Grade 17 native English-speaking person.
Original: After more touring ( including a European tour and spots on the Vans Warped tour ) , the band went back to the studio and recorded their fourth album The Sufferer & the Witness , which included eight singles ( `` Ready to Fall , `` Prayer of the Refugee '' , `` The Good Left Undone '' , `` Behind Closed Doors '' , `` Drones '' , `` Survive '' , `` Injection '' , and `` Under the Knife '' . )
Simplified: After more touring ( like a European tour and spots on the Vans Warped tour ) , the band went back to the studio and recorded their fourth album The Sufferer & the Witness , which had eight singles ( `` Ready to Fall , `` Prayer of the Refugee '' , `` The Good Left Undone '' , `` Behind Closed Doors '' , `` Drones '' , `` Survive '' , `` Injection '' , and `` Under the Knife '' . )