한 R.ef R.ef (알이에프) is a South Korean Boy Group that debuted in 1995. They consist of 3 members: Cheolwoo, Daehyun and Sungwook. Read All General Information International Stage Name : R.ef Domestic Stage Name : Pronounce 알이에프 Debut Day : 1995-03-14 (Active) Members 19951996199719981999200020012002200320042005200620072008200920102011201220132014201520162017201820192020202120222023202420252026 CheolwooDaehyunSungwook Cheolwoo (철우) Full Name: Park Cheolwoo Date of Birth: 1965-01-19 (61 years) Zodiac sign: Capricorn Country: South Korea Active period: 1995-present Role: Leader,Rapper Daehyun (대현) Full Name: Sung Daehyun Date of Birth: 1973-05-16 (53 years) Zodiac sign: Taurus Country: South Korea Active period: 1995-present Role: Vocal,Rapper Sungwook (성욱) Full Name: Lee Sungwook Date of Birth: 1973-11-06 (52 years) Zodiac sign: Scorpio Country: South Korea Active period: 1995-present Role: Vocal Metrics and Achievements Success(max 5 stars) : Time since last release : (2004-10-10) Time to Success : Not reached or Indie/Nugu PAKs : 0 Music Show Awards2006+ : 0 Annual Awards : 0 Streaming Weekly Score(Since 2010) : Never ranked in top 100 Billboard weekly Score(Since 2020) : Never ranked in top 200 Physical Sales (Circlechart) : 0+ Total Youtube Views : 280.043+ Brand Physical Sales : 0+ Brand Views : 280.195+ Images No images yet