Derulo previewed "Swalla" in a video posted in August 2016. He officially announced it as a single on January 2, 2017. and was released for download on
iTunes Store the next day. While talking about the song on the red carpet of the
59th Grammy Awards, Derulo said: "I never believe in forcing a collaboration. You know, I’m a fan of both of theirs and I thought that they fit the track perfectly. It’s one of those ones that’ll get you up and doing your thing. I feel like it’s gonna stick out on the radio. There’s nothing that sounds like it." On May 12, 2017, the trio released "Swalla (After Dark Remix)", a slow-paced acoustic remix of the original song. In an interview with
The Fader, Derulo said about the remix: "It was so nice we had to do it twice! The original version is the ultimate club track, so the idea was to give people the flip side of the song. The subject matter and melody is so sexy, but you might miss the 'sexy' in all the fun of 'Swalla'. So, 'After Dark' is on the opposite side of the spectrum and is SURE to set the mood." ==Critical reception==