On August 10 1985, Into The Groove spent the first of four weeks in the #1 position on the UK Singles Chart. It was Madonna’s first chart-topping single in the UK, where she has collected a total of thirteen #1 hits to date.
As an added validation, Into the Groove was Madonna’s first self-produced release (co-produced with Stephen Bray). While artists co-producing their own work is common today, it was relatively unusual at the time, particularly for female artists. The immense success of the single undoubtedly helped convince the powers at Sire/Warner to grant Madonna the artistic freedom to co-produce her next album, True Blue, together with her collaborators Stephen Bray and Patrick Leonard.
Today In Madonna History 
I LOVE Into the Groove-still her most Iconic Dance song!
How on earth is “Into the Groove” not a #1 hit in the US? It’s funny… I remember when the song came out and it was on the radio constantly during the summer of ’85. I actually don’t ever remember hearing :Angel” on the radio.
“Into the Groove” was never officially released as a single here in the U.S., otherwise it most certainly would’ve sky-rocketed to #1. It was instead released as a B-side on the “Angel” 12-inch maxi-single. Incidentally, the raw studio cut used in “Desperately Seeking Susan” has never been made commercially available. The version of “Into The Groove” that was released for radio airplay and included on the “Angel” maxi-single, as well as tagged onto the “Like A Virgin” album in the U.K., is distinctively more polished and — in my opinion — over-produced. Regardless of which version you prefer, it is inarguably one of the greatest songs in the history of pop music.
Into The Groove was a UK number one for 4 weeks not 2. Still sounds fresh after 33 years!
🙂