Kim Tae-woo
In February 2010, with Kim Tae-woo having been discharged from the military, the duo toured overseas together for the first time. They held six concerts in Chicago, Seattle and Vancouver. Son was one of three former JYP Entertainment artists, the others being Kim and their close friend Rain, invited to perform at the first JYP Nation concert "TEAMPLAY" held at the Olympic Gymnastics Arena that December.