The heat has finally started to break, but nobody told the K-pop release calendar. September opens with Chung Ha, Kwon Eun-bi, Lisa and Jisoo all putting out new music in just a four day span, the densest run of solo releases by women in K-pop this year. The month only gets busier, with a long-delayed first full-length album, a debut EP, a band's second wave and a rapid-turnaround return from HYBE's girl group LE SSERAFIM still to come. Solo queens open the month Chung Ha started the run on Tuesday, releasing the digital single "México" through MORE VISION. It is her first new music since "Save me," the birthday single she put out in February. Kwon Eun-bi then arrives Sept. 3 with the digital single "DEJAVU," her first release in a year and four months. It is also her first since signing with RBW in April, after ending a long run with Woollim Entertainment at the end of March. RBW has been teasing a wider tonal range with the single, compared to the sharply sexy register of her last release. BLACKPINK's Lisa also lands on Sept. 3 with "SaWaDiKa," the lead single from her six-track EP "PR