The lineup will look a bit different for the third (well, second) day of Las Vegas' When We Were Young Festival, with both additions and subtractions affecting the bill for the emo and pop-punk gathering's October 29 installment.

Canadian singer Avril Lavigne, whose set was a highlight of Sunday's WWWY edition, has dropped off due to "unforeseen circumstances," the fest announced today on Twitter.

Indie-pop band Death Cab for Cutie, a new addition, will perform during her 7:35 p.m. slot at the Black Stage.

Another newly added band, Florida rock band Underoath, will play the Pink Stage at 12:50 p.m., a spot previously occupied by Wolf Alice.