Songfacts®:

• This is a "let's get up and dance" song, taking place on ladies night at some favorite hangout. In the United States, ladies' nights were popular promotions at bars and nightclubs, offering free admission and other incentives for women to show up. Any money the establishments lost on their female customers were offset by the increase in male patrons.
  
  These days, there aren't many ladies' nights, as cultural norms have shifted.
• Disco was dying when "Ladies Night" was released at the end of 1979, but that didn't stop Kool & the Gang from using a disco groove on this track and mentioning the "disco lady" and "disco lights" in the lyrics. The song mixed in enough of their funk flourishes to stand out from the pack and bring them into the '80s - it reached its chart peak of #8 in America the second week of 1980.
• If commas save lives ("Let's eat grandma!" vs. "Let's eat, grandma!"), then what do apostrophes do? In the case of "Ladies Night," an apostrophe should be used after the 's' to show possession. It's a night belonging to the ladies, after all. According to sociologist Lisa Wade, omitting the apostrophe has some pretty hefty implications. She explained after a Canadian bar had a Ladies Night: "It is advertised as a night of ladies, not a night for ladies. To put it more bluntly, the ladies are not guests, they're bait."
  
  The original cover art for "Ladies Night" did include the apostrophe, but the press materials and chart listing did not (neither did the 1995 rerelease). But let's cut Kool & the Gang some slack as the song is clearly giving the night to the ladies, not inviting creepy interlopers:
  
  On disco lights your name will be seen
  You can fulfill all your dreams
  Party here, party there, everywhere
  This is your night, baby, you've got to be there
• In 2003, the girl group Atomic Kitten recorded a version of this song with Kool & the Gang, turning it into a girl-power song. This version was included on Atomic Kitten's album Ladies' Night and hit #8 in the UK. Atomic Kitten (formerly known as Automatic Kitten), split within a year, although they re-united again temporarily to record a single for charity in 2006 and permanently in 2008.
  
  Liz McClarnon of Atomic Kitten explained to the BBC children's program Newsround why they covered this track: "Kool & the Gang asked us to do a collaboration with them for their duets album which has got Mary J Blige, Wyclef and people like that. They wanted us to do 'Ladies Night.' We asked them if we could have it [for our album] and they said yes. So we called it after Ladies Night the song."
• "Ladies Night" marked the debut of Kool & the Gang's new lead singer, James Taylor, who went by "J.T." so he wouldn't be confused with that "Fire and Rain" guy.
  
  To that point, vocals in the group really were a "gang" effort, shared by various members. This worked well on funky stuff like "Jungle Boogie" where the vocals were basically chants, there to serve the groove, but in the disco era that didn't go over. Taylor gave them a focal point and was a dedicated singer - he could look the ladies in the eye and they'd know he was singing to them.
  
  With Taylor on board, Kool & the Gang went on the upswing. "Ladies Night" was their first Top 10 hit since "Hollywood Swinging" in 1974; In 1981 they hit #1 with their all-purpose party anthem, "Celebration."
  
  Taylor became even more crucial to the group in the mid-'80s when they embraced a more adult-leaning sound on songs like "Fresh" and "Cherish," which were big hits. He went solo in 1989 but didn't have much impact away from the band.
• Like most Kool & the Gang songs, every member of the group is credited as a writer. "Ladies Night" started with a groove their multi-instrumentalist music director Ronald Bell came up with. His brother, Robert "Kool" Bell (the bass player in the group), gave him two ideas for lyrical themes: "Ladies Night" and "Hangin' Out." It was no contest - Ronald knew there were ladies nights everywhere, and loved the idea.
  
  They fleshed out the song with the group, but struggled to find a hook. Ronald Bell remembered a piece of advice from his mother. He recalled to Billboard: "My mother, Aminah, had a hand in that one. Because she would say to me, 'Always give the people nursery rhymes. Give them something they remember.' She liked the Dells' song, 'Oh What A Nite,' so I put that in. When we were finished, we were all in tune that this was it. We just didn't know how big!"
• This was sampled by Heavy D and The Boyz on their 1994 song "This Is Your Right," which reached #30 in the UK.
• In the '90s, "Ladies Night" was used in commercials for Bud Light beer, where four guys dress up as women to take advantage of a ladies' night promotion at a bar. Their plan works, but goes wrong when "Ted from accounting" spots them and likes what he sees.
• Some states - California, Pennsylvania, Maryland and Wisconsin - have outlawed ladies' nights at nightclubs and other establishments, citing gender discrimination against males who are expected to pay full price for drinks and services while women receive a special discount purely based on their sex. The Illinois court dismissed the complaints, stating that ladies' nights are intended to attract more female customers, not to deter male customers.
• "Ladies Night" was featured in several movies, including 200 Cigarettes (1999), starring Ben Affleck and Christina Ricci; Little Nicky (2000), starring Adam Sandler and Patricia Arquette; Sorority Boys (2002), starring Barry Watson and Michael Rosenbaum; Undercover Brother (2002), starring Eddie Griffin and Chris Kattan; Confessions of a Teenage Drama Queen (2004), starring Lindsay Lohan; Shark Tale (2004), starring Will Smith; Charlie Wilson's War (2007), starring Tom Hanks and Amy Adams; Made of Honor (2008), starring Patrick Dempsey and Michelle Monaghan; and Ghosts of Girlfriends Past (2009), starring Matthew McConaughey and Jennifer Garner.
• TV series to use the song include The Vampire Diaries in 2015 (episode: "I'll Leave My Happy Home for You") and Love Island (the US version) in 2023.
• The female vocal group Something Sweet provided backing vocals on this, as well as other Kool hits like "Celebration."
• Ronald Bell was the only original member of Kool & the Gang still alive when they were inducted into the Rock And Roll Hall Of Fame in 2024, but J.T. Taylor joined him at the ceremony, where they performed a medley of their hits, including "Ladies Night."