On the August 15 episode of 'I'm A Man,' SISTAR were the guests who appeared on the tone-deaf special to talk and interact with the tone-deaf men in the audience.

After they received a bit of coaching and advice from Kim Yeon Woo, two of the men got opportunities to sing with the members of SISTAR. Hyorin sang with patience Byul and Na Yoon Kwon's duet "Greeting" with an audience member, while Soyu sang her own duet song "Some" with another member, who actually exceeded her expectation during the moments when he would sing with confidence.

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Also on the show, MC Yoo Jae Suk asked the girls, "How do you think you'd feel if your boyfriend could not sing?"  Hyorin said, "Is singing that important of an aspect when we love?"  Dasom said, "Whether he's tone deaf, stiff, or bad with rhythm, those things don't matter as long as I love him."

Bora said, "It's not like I would check to see if a guy is tone deaf before I date him", while Soyu replied, "I can always stay by his side and sing to him."

Check out the performances below!