On October 17 2005, Hung Up was released by Warner Brothers Records as the lead single from the album Confessions On A Dance Floor.
Written & produced by Madonna & Stuart Price (with additional sampling credits to ABBA’s Benny Andersson & Björn Ulvaeus), Hung Up had initially been previewed instrumentally in a September 2005 commercial for Motorola’s ROKR mobile phone. Price had also teased a dub remix of the track to unknowing audiences during his DJ sets throughout the previous year.
The single was Madonna’s first to be released digitally through iTunes.
In an interview with The Daily Telegraph from October 2005, Benny Andersson spoke about their decision to allow Madonna to sample ABBA’s 1979 hit, Gimme Gimme Gimme (A Man After Midnight):
We get so many requests from people wanting to use our tracks but we normally say ‘no’. This is only the second time we have given permission. We said ‘yes’ this time because we admire Madonna so much and always have done. She has got guts and has been around for 21 years. That is not bad going.”
Today In Madonna History 
There it is!-Metal Rocker Hung Up virtually and literally saved and resurrected Madonna’s life, career and music from oblivion because it became her biggest hit, most iconic tune and hardest rocker all at once. When it came time to induct Madonna into The Rock & Roll Hall of Fame, Hung Up came immediately to mind-it became her seminal and signature song! My Confession-I love Hung Up!