are Patrick Stump and G.O both singer-songwriters ?
Patrick Stump: Patrick Martin Stumph (born April 27, 1984), known professionally as Patrick Vaughn Stump, is an American singer-songwriter, multi-instrumentalist, record producer, actor, and music critic. G.O (singer): Jung Byung-hee (Hangul:  ; Hanja:  ; November 6, 1987), better known by his stage name G.O, is a South Korean singer-songwriter and actor.
yes