TRAX (originally The TRAX) is a South Korean rock band formed in the summer of July 17, 2004 by S.M. Entertainment and formerly produced by X Japan's co-founder Yoshiki. The name "TRAX" refers to "recording tracks", but also stands for the first letter of each original member's stage name, Typhoon of the Rose Attack on X-Mas. Originally a nu metal and alternative rock band, they changed to a straight pop rock sound when drummer Rose left in 2006.