f(x) (에프엑스) waa koox gabdho ah oo fadhigoodu yahay Koonfur Kuuryia oo ay aasaaseen SM Entertainment sanadkii 2009. Xubnaha kooxdan waa Victoria, Amber, Luna, iyo Krystal oo horay u ahaa Sulli ilaa ay ka tagtay kooxda bishii Ogosto 2015. f (x) waxaa si rasmi ah loo soo saaray bishii Sebtember 2009 iyadoo la sii daayay heesta "La Cha Ta". Albumkoodii ugu horreeyay ee istuudiyaha, Pinocchio (2011), EP Nu Abo iyo Electric Shock waxay gaareen lambarka koowaad ee shaxanka muusigga Koonfur Kuuriya. Albumkooda labaad ee la amaanay, Pink Tape (2013), waxay ahayd albumka K-pop-ka ee ka baxa kanaalka muusikada Mareykanka ee Fuse ee "41 Album-ka ugu wanaagsan 2013", albumka kaliya ee heesaaga reer Korea ee lagu soo bandhigi doono liistada saxda ah ee dhaleeceeyayaasha Kuuriya "100ka Album Ee Ugu Sareeya Markasta", waxaana loogu magac daray "Album-kii Ugu Wanaagsanaa K-pop-ka ee 2010-kii" oo uu soo saaray Billboard. Albumka seddexaad iyo afaraad ee kooxda, Red Light (2014) iyo 4 Walls (2015), ayaa ganacsi ahaan ku guuleystey oo ay si wanaagsan u heleen dadka dhaleeceeya muusikada.