This is what we found on Wikipedia regarding the Into the Groove:

"Into the Groove" is a song recorded by American singer Madonna, and featured on the 1985 film Desperately Seeking Susan. Written and produced by both Madonna and Stephen Bray, the main inspiration behind the song was the dance floor; the singer wrote it while watching a Latin American man to whom she was attracted. Its instrumentation features synthesizers and drum machines, with Madonna's voice being double tracked on the chorus. Sexual innuendos and undertones are present throughout the lyrics, which are written as an invitation to dance with the singer. Originally written for her friend Mark Kamins, Madonna later decided to use it on the film, as one of the scenes needed a dance song. It was later added to the 1985 international re-issue of her second studio album, Like a Virgin (1984), and in her compilations You Can Dance (1987), The Immaculate Collection (1990), Celebration (2009), and Finally Enough Love: 50 Number Ones (2022).

Warner Bros. Records did not give "Into the Groove" an official release in the United States, thus making it ineligible to enter the Billboard Hot 100. It was only released as the B-side to the 12" maxi-single of "Angel", the third official single from Like a Virgin, and reached the first spot of Billboard's Hot Dance Singles Sales chart. In the United Kingdom, "Into the Groove" was released on July 15, 1985. It became Madonna's first number one hit and remains her best-selling single. It was also successful throughout Europe, topping the charts in Austria, Ireland, Italy, and the Netherlands. Critically acclaimed since its release, "Into the Groove" was voted the best dance single from the 1980s decade in a Billboard poll, and has been cited by multiple publications as Madonna's best single.

While no official music video was shot, a compilation made up of scenes from Desperately Seeking Susan was created to accompany the release, and received heavy rotation on MTV. Madonna has performed "Into the Groove" on seven of her concert tours, the most recent being the Celebration Tour of 2023―2024. It has been covered and sampled by many artists, notably Australian singer Dannii Minogue, who released a mashup of "Into The Groove" and her 2003 single "Don't Wanna Lose This Feeling".