i want to ask is it right they have song her name"what's up?"

cnblue dont have a song with a عنوان "What's Up". but from what i know what's up song is sang سے طرف کی four blondes and the song were sang سے طرف کی seohyun on wgm, while she's learning گٹار from Yonghwa wh.Yonghwa asked her to practiced that song:).but cnblue dont have a song called "what's up" : )