a Boy". Musically, Tamar Herman of Billboard characterized "Zimzalabim" as an electropop song with "funky percussive melodies, tinny hip-hop chants, EDM dance breaks, and chill, groovy moments". It is composed in the key of F major, with a tempo of 128 beat-per-minute. Choi Young-joo of No Cut News noted the "rhythmic drumming and cool melodies". In addition, Lee Jung-ho of Star News noted the song's unconventional style and frequent changes in genre. Lyrically, "Zimzalabim" talks about "breaking convention, reaching for your dreams, and letting a little bit of magic back into your life". Music video Background On June 10, 2019, the trailer video titled "Special Competition: RVF D-10", was uploaded through the Red Velvet's official YouTube channel. On June 17, 2019, a 17-second video teaser for "Zimzalabim" was uploaded on the official SM Town channel. A final 19-second video teaser was uploaded the next day, and the music video for "Zimzalabim" was released on June 19, 2019. Synopsis and reception The music video is set in a fantastical amusement park, where they ride roller coasters through the skies, throw a tea party in a spinning teacup and perform the song alongside sentient instruments. Following the music video's release, writer Tamar Herman of Billboard described it as "a bright music video", further praising the video for "the song's mesmerizing choreography". Writer Puah Ziwei of NME noted the "energetic" music video. Emlyn Travis of Buzzfeed noted the video as "magical" referring to its "carnival rides, floating instruments, tea cups, and a hefty dose of fantasy". Live performances Red Velvet promoted the song on several music programs in South Korea including Show! Music Core, Music Bank and Inkigayo. The group received five music show trophies for the song. On June 22, 2019, Red Velvet has released methods of applying for the global dance cover campaign, "Zimzalabim In Public" through various official SNS accounts, as well as a focus cam by members with the highlight choreography of the new song, and the group dance shooting site. On June 25, 2019, a flash mob performance video, titled "ZIP.CODE : SEOUL" was uploaded to the SM Town official YouTube channel. About 500 people, including famous YouTube creators Na Ha-eun and Go Toe-kyung were part of the performance. Commercial performance "Zimzalabim" debuted at number 14 on the Gaon Digital Chart and peaked at number 11 the following week. The song debuted at number 8 on the Billboard