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She praised the duo, complimenting them, "They did so well. They were fantastic. I was singing along [when they performed]. Nowadays, there are too many people who sing really well in Korea. I want to collaborate with them at least once." If you don't know Martin Smith, check them out on 'Superstar K7' and you will see why Ailee is raving over them so much! 

Aside from Martin Smith, Ailee confessed that she would also like to sing a duet with 4men's Shin Yong Jae and gag woman Shin Bora. When asked who she would like to collaborate with in Korea, the singer replied "There are many people who sing well here that it's hard to pick just one person. But I would like to sing a duet with Shin Bora. I always wanted to sing a duet with Shin Yong Jae too. We are the same age but he's like a friend who is a oppa and a bit awkward," drawing laughter. 

Check out a clip of Martin Smith below!