Ddu-Du Ddu-Du

"Ddu-Du Ddu-Du" (Korean: 뚜두뚜두; RR: Ttuduttudu) is a song by South Korean girl group Blackpink, recorded for their first Korean extended play, Square Up (2018). The song was written by YG collaborator Teddy Park, whilst production and composition were handled by Teddy, 24, Bekuh Boom, and R. Tee. It was released as the extended play's lead single to digital outlets on June 15, 2018. The Japanese version of the single was released through YGEX on August 22, 2018, and was distributed in three physical formats. A trap and pop rap song infused with bubblegum pop and EDM sounds, it uses oriental percussion rhythms and whistling while the title imitates the sound of a gunshot. Its lyrics contain messages of strength and self-assurance.

"Ddu-Du Ddu-Du" drew generally favorable reviews that complimented its production and the group's performance. It was named the Song of the Year in a public survey conducted by Gallup Korea in 2018, and appeared on Melon and Rolling Stone's lists of the best Korean pop songs of all time. It was the top song on the South Korean Gaon Digital Chart for three weeks, Blackpink's second number-one single in the country. It reached number one in Singapore and Malaysia and on the Billboard K-pop Hot 100 and World Digital Songs charts. The song peaked at number 55 on the US Billboard Hot 100 and became the first song by a K-pop girl group to enter the UK Singles Chart. It was certified double platinum for streaming and platinum for digital sales in South Korea, platinum in Japan and New Zealand, gold in the United States, and silver in the United Kingdom.

An accompanying music video features the group members in high-end looks on pink-and-black-hued sets. It became the most-viewed online video by a Korean act within a day of its release, the second-most-watched music video of all time within two days. It is the first music video by a K-pop group to reach two billion views, and remains the most-viewed music video by a K-pop group on YouTube to date. Blackpink promoted "Ddu-Du Ddu-Du" with appearances on the music programs Show! Music Core and Inkigayo in South Korea. The song's "finger gun" choreography became a dance move. The group sang the song dueing their three concert tours, at California's Coachella festival, and the BST Hyde Park festival in London.