Archuleta returns for 'Idol' disco week

American Idol alumnus David Archuleta has been confirmed to perform on next week's double-elimination episode.

The singer, who finished runner-up in series seven, will play his new single 'A Little Too Not Over You' on the Fox show.

Harry Wayne "KC" Casey, Thelma Houston and Freda Payne are also scheduled to appear as part of the Disco Week theme. They will play a medley of hits including 'Get Down Tonight', 'Band Of Gold' and 'Don't Leave Me This Way'.

Next Wednesday's episode will be a double eviction because the panel chose this week to use the 'Judge's Save' on Matt Giraud, who received the fewest public votes.