I need to know the name of this piano trio.?

At my school in Iowa, we had a piano trio vistit our school, and I need to know who the are! They said they were sisters that had put out like five albums and been on tour around the world. (I wanna get an album for my mom, she loves Yo Yo Ma kinds of music, and this reminded me of that. The women said they were from South Korea, but then moved to New York, I think, as children. I know the name of their group is their last name, and then Trio. They played Piano, Chello, and violin. They seemed to be fairly youngike in their 20s or 30s. Please help me if you can! Thank you!