Taylor Swift performed on the show's Season 6 premiere episode this week.
Adkins is slated to perform his No. 1 single "You're Gonna Miss This" with the remaining 11 acts on Monday's live installment.
The finalists are split up into three groups -- female solo artists, male solo artists and groups.
The celebrity judges -- singer-songwriter and producer John Rich; singer-songwriter Jewel; and songwriter Jeffery Steele -- are to be surprised in the next episode when they are each assigned to mentor one of these groups through the rest of the show, NBC said.
Swim Week Miami Beach 2014 [PHOTOS]