"La Di Da" (stylized in all caps) is a song recorded by South Korean girl group Everglow for their second extended play -77.82X-78.29.

[3] The teaser for the single's music video and multiple concept photos were released on the group's official social media accounts, revealing the retro style of the comeback.

[4] In the showcase event for the EP's release, member Yiren said, "We tried a bolder and more unique performance…We also tried to expand Everglow's musical spectrum.

"[5] "La Di Da" is a retro-inspired uptempo electropop song that combines various elements from the '80s, such as cheerleader chants and strong synthesizers.

[8] Prior to the release of -77.82X-78.29, on September 21, Everglow held an online showcase event in order to introduce the EP and its songs, and to answer questions from the media, where they performed "La Di Da" live for the first time.