Song: Ký Ức Cũ Artist & Composer: Kaisoul, Ljz, Bảo Jen Music Producer: CyruSs Mix & Master: Kaisoul Designer by: TomK / Khánh Nh Follow Artist: Kaisoul: www.facebook.com/kaisoul9z​ Ljz: www.facebook.com/ljz.bhu​ Bảo Jen: www.facebook.com/youngjen.lee Follow CyruSs: Facebook: www.facebook.com/CyruSs.Produ...​... Fanpage: www.facebook.com/CyruSs.Prod​​​​​ Youtube: youtube.com/channel/UCLezvQFC...​ Twitter: twitter.com/cyru_ss