Musically, the record is a primarily synthpop album with elements of trap and R&B that draws heavy influence from American female artists of the 1990s.

Tiffany promoted the EP in South Korea by holding a debut showcase at SMTown COEX Artium in Seoul on May 10, 2016 and through a six-leg concert titled Weekend-Tiffany in June 2016.

Upon its release, I Just Wanna Dance received generally favorable reviews from music critics, who praised Tiffany's vocals while comparing its styles to those of works by Carly Rae Jepsen, Ariana Grande and Mariah Carey.

She further described it as having "chill" and "natural" vibes and cited the most difficult part in putting the album together was her efforts in "work[ing] out of [her] comfort zone" and "learning how to push limits".

[3][4][5][6] Speaking of her titular title track, Tiffany expressed "Most girls my age, when they are stressed or want to kind of get away, they dance the night away.

[3][4][5][6] Known to be taking part in the artwork and visuals for previous Girls’ Generation and TTS's releases, Tiffany purposely avoided it and only wanted to focus on the music for her solo album.

The track, featuring Simon Dominic, was supposed to be a part of the album, but was pushed back and released under the SM Station digital music platform in June 2016.

"[4]I Just Wanna Dance is a synthpop record that draws inspiration from American retro musical styles of the 1990s with a "modern take.

[7][8] Entertainment Weekly's Joey Nolfi described the track as "bubbly electronic dance" that "recall works by Mariah Carey, Robyn, and Gwen Stefani.

"[11] Jeff Benjamin writing for Fuse compared Tiffany's "more sensual" vocals on the song to those of Carly Rae Jepsen and Ariana Grande while likened her "powerhouse" notes in the second chorus and the bridge to Mariah Carey's famous whistle register.

[13] After receiving good feedback from the international fanbase, a remix for the English version of "I Just Wanna Dance", by South Korean music producer Kago Pengchi, was released on May 23, 2016.

"[24] Jeff Benjamin writing for Fuse noted the "unexpected sonic and vocal environments" on the title track "I Just Wanna Dance" and compared its musical styles to those of Carly Rae Jepsen, Ariana Grande and Mariah Carey.

[10] Chester Chin from The Star was not enthusiastic towards the EP, writing that Tiffany opted for "sexy shimmering melodies" instead of "one-two punch hooks and memorable choruses".