"Leave the Door Open" is the debut single by the American super-duo Silk Sonic, consisting of Bruno Mars and Anderson .Paak. It was released on March 5, 2021 by Aftermath Entertainment and Atlantic Records as the lead single from Silk Sonic's upcoming debut studio album An Evening with Silk Sonic. "Leave the Door Open" was written by Mars, Brandon Anderson, Dernst Emile II and Christopher Brody Brown, while the production was handled by Mars and D'Mile. "Leave the Door Open" is an R&B and soul song, influenced by quiet storm and inspired by the "1970s Philadelphia soul" groups. Its romantic lyrics describe a "detailed erotic invitation". "Leave the Door Open" received critical acclaim, with some praising both singers' vocals, as well as the song's composition. The song was a commercial success, peaking at number one in various charts, including the US Billboard Hot 100, Israel, Malaysia and New Zealand. It has also entered the top ten of several countries, such as Australia, Belgium, Canada and Portugal, as well as the top twenty of Denmark, Netherlands, Ireland and the United Kingdom. It has been certified platinum by the Recording Industry Association of America (RIAA), Recorded Music NZ (RMNZ) and Music Canada (MC).The accompanying music video, which was directed by Florent Dechard and Mars, was released along with the song. It depicts Mars and Paak, as Silk Sonic, performing the song in a vintage studio as several women dance to it. To promote "Leave the Door Open", Mars and Paak performed it at the 63rd Annual Grammy Awards, which received praise for its simplicity and was compared to a 70's Soul Train telecast. A stripped version of the song with some fan interaction was also performed at the 2021 iHeartRadio Music Awards. An emote for the online video game Fortnite was also created, which features dance moves by Mars played along the chorus of the song.