R&B singer Wheesung and Hwayobi took part in Gummy’s soon-to-be-released album, according to C-Jes Entertainment, which handles Gummy’s music career. “Wheesung and Hwayobi, both old friends of Gummy’s, have written two tracks for her new album,” the agency said. The agency remarked that veteran singer-songwriter Wheesung composed a soul track,…