With the rising popularity of music that does not contain autotune and artificial beats, is it any wonder that SM Entertainment's rock group TRAX is still going strong these days? With the help of fellow company member Seohyun of SNSD, the group's song Let You Go has gained much love. Check out the performance below! SNSD's maknae is just all over the place these days. Not only does she play the piano for TRAX's performances on music shows, but she also has promotions with her group for their song Oh! as well as filming for We Got Married!