Songfacts®:

• The first single from Britney Spears' ninth studio album finds the songstress with one thing on her mind. Sparks are flying between Spears and her lover and when they go back to her room she coos they will "ignite in the heat of the moment."
• The song features some rhymes from rapper G-Eazy. He recalled to KIIS FM in the US. "I got the call when I was in Australia on tour, and they were like, 'Yo, Britney Spears wants you on her single'. I'm like, 'Stop playing.'"
  
  He added: "I got the email and I listened to it and I was like, 'S--t - it's a big record'. So I knocked it out that night."
• Spears wrote the song with British singer-songwriter Joe Janiak, who also penned the original version of Ellie Goulding's single "Beating Heart."
• The sensual, R&B-infused production was supplied by an English DJ called Burns, whose single "Lies" peaked at #32 on the UK Singles Chart in 2012.
• How did Britney first team up with G-Eazy? She explained to Ryan Seacrest: "I worked with an amazing A&R girl, Karen. She got me together with a lot of people - Julia Michaels, a lot of the new up and coming artists. It was her idea - she's very gifted at knowing what sounds good."
• The song's music video is a video about the making of the video. (Bear with us). As the sultry slow jam plays, Britney and some friends audition some hot guys for her music clip. Unfortunately, G-Eazy doesn't get to cast for the singer; he's just there on a video screen. The clip was directed by Randee St. Nicholas, who also shot Britney's "Piece Of Me" promo photos.
• The video was originally directed by David LaChapelle, who previously shot the clip for Spears' 2004 single "Everytime." Apparently his effort was scrapped by Spears and her team in favour of a less racy concept.
• Britney Spears explained the album title to Radio.com: "I decided to call the album Glory because my son was with me through a lot of the process of recording, and he saw me coming home every night and he'd play the songs, and it was his idea," she said. "He just randomly came up with it. It was kind of cool."
• Burns recorded the original song in a friend's kitchen back in 2015. After it got picked up by Spears' people, he hit the studio with her for a couple of days to record the vocals. "You think that there might be this diva-ish personality with somebody of that level," he told Billboard magazine of his time spent with the singer, "but she was just so normal, it's crazy."