Bubble Pop! waa markii ugu horeysay ee EP uu sameeyo HyunA, xubin ka tirsan kooxda gabdhaha 4Minute. Waxaa la sii daayay Luuliyo 5, 2011, oo ay soo saartay Cube Entertainment. Hyuna wuxuu kor u qaaday heesta "Bubble Pop!"  oo ku saabsan bandhigyada muusiga bishii Luulyo 2011 ee KBS Music Bank, MBC Show! Music Core, SBS Inkigayo iyo Mnet M! Countdown. Heesta hordhaca ah ee EP "Attention" ayaa sidoo kale loo adeegsaday bandhigyada. Bishii Agoosto, Cube Entertainment waxay joojisay dallacsiinta maxaa yeelay fiidiyowga heesta, duubista, iyo labbiska masraxa waxaa u qaatay Guddiga Isgaarsiinta Kuuriya (KCC) inay yihiin "kuwo galmo ahaan soo jeedinaya". Madadaalada Cube waxay go'aansatay inay dhiirrigeliso hees kale oo ka socota EP "Just Follow", oo ay kujirto Dok2.  Waxqabadka Hyuna ee ku saabsan bandhigga muusikada ee Inkigayo waxaa ka muuqday Zico oo ka socda kooxda wiilka ee Block B halkii laga dhigi lahaa Dok2. "Bubble Pop! on Soribada". "HyunA makes her "Bubble Pop!" comeback on 'Music Bank'". allkpop.