Gwacheon will present free outdoor jazz performances this weekend. "Gwacheon Jazz Picnic," featuring a variety of artists from vocalists to orchestra, will take place on the lawn next to Gwacheon Citizens' Hall May 3-4. This event, combining jazz performances with camping, "Healing Campnic Day," is being introduced for the first time this year. On May 13, the 17-member Hoo Kim Big Band, led b.