lyrics "red flavor" done by Lindell himself. It was later rewritten in Korean by SM songwriter and producer Kenzie, whom had previously worked with the group on their first studio album and their third extended play. Jeff Benjamin of Fuse magazine described the song as a "super-simple-to-swallow piece of pop" and wrote that the album consists of five 'feel-good' tracks. "You Better Know" is a warm EDM song. The tropical dance track "Zoo" is a throwback to the group's animal sound-infused debut single "Happiness". "Mojito" was defined as a saccharine, glossy, electropop song and lastly, "Hear the Sea" is a mid-tempo R&B track. Reception While Tamar Herman of Billboard, Jeff Benjamin of Fuse magazine and Chase McMullen of The 405 praised the title track and EP for its summery vibe, with McMullen giving the EP an 8/10 and Hermann commenting on its "dynamic in its jam-packed but not overpowering production" while concluding that it is "sure to be one of the summer's K-pop earworms", Lee Gi-seon of IZM magazine was more neutral and gave the EP 3 out of 5 stars, but had a more positive response to the single "Red Flavor". Chester Chin of The Star described the album as a "sizzling affair that highlights the girl group's more vivid and upbeat side". The Red Summer claimed the no.1 spot on the South Korean Gaon Album Chart on the third week of July, with the title track "Red Flavor" topping both the Gaon Digital Chart and the Gaon Download Chart. All five tracks from the EP also debuted in the Top 50 of the Digital Chart: "Red Flavor" (no. 1), "You Better Know" (no. 14), "Zoo" (no. 24), "Mojito" (no. 32) and "Hear The Sea" (no. 35). The Red Summer marks the third time the group has topped Billboard's World Albums chart, making them, at the time, the K-pop girl group with the most no. 1 albums on the chart. The record was tied by their label mate Girls' Generation in August of the same year but was once again beaten by Red Velvet with the release of their second studio album Perfect Velvet in November. According to the site, the EP sold over 1,000 copies within the week, making it at the time the group's best US sales week. It also entered Billboards Top Heatseekers Albums Chart at no. 8, the first time the group has charted in