In Wednesday night's The Sing-Off episode, a few acoUstiKats stripped to their boxers in a Risky Business tribute.
In Wednesday night's The Sing-Off episode, a few acoUstiKats stripped to their boxers in a Risky Business tribute. Tyler Golden/NBC
In Wednesday night's The Sing-Off episode, a few acoUstiKats stripped to their boxers in a Risky Business tribute. Tyler Golden/NBC

acoUstiKats made the most of their 'Sing-Off' experience

December 19, 2013 5:09 PM