I don't know what era or decade their choices will need to come from.
Cook likes songs that are either 'haunting' or can be made into 'haunting' versions. He might be able to do something from Jonathon Livingston Seagull, like Lonely Looking Sky. There's really a lot of songs he could do and do well. Course, he did do a slow song this past week so he might choose and be better off rocking something out, like America or Surviving The Life.
Syesha coul probably do You Don't Bring Me Flowers. I know it was a duet but, duets have been changed to fit a single before.
Maybe Brooke could try I've Been This Way Before
Archuleta, hmmm, how about Brooklyn Roads?
Very scary that we BOTH concur on what Dreds will do..(g)