So far my take:
Bucky can now be called "Bo Covington." He did a decent job with the Mandisa theme.
Ace was pretty "average." A Boy band does Queen? But Simon may have saved him with a sympanthy backlash!
Pickler....I expected a train wreck but it was a lot better. Actually...she did her own "gherkin" thing with it.
Chris...don't know the song but it sounds pretty good so far.
Her outfit has a bunch of adolescents "gherkin off" ;)