"Let's Love" is a song by French DJ David Guetta and Australian singer-songwriter Sia. It was released as a single on 11 September 2020 through Parlophone. The song was written by Guetta, Giorgio Tuinfort, Marcus van Wattum and Sia. David Guetta previously collaborated with Sia on the singles "Titanium", "She Wolf (Falling to Pieces)", "Bang My Head", "Helium" and "Flames". Guetta revealed he was in Miami during the COVID-19 pandemic when he texted Sia and asked if she wanted to "save the world with a happy record and go against the trend". He originally sent Sia piano chords, on which Sia recorded vocals and sent him back a ballad. Guetta wanted the track to feel "happier", and turned it into an '80s synth-pop track. Guetta told Forbes that Pat Benatar, liked by both Sia and himself, was a big influence for "Let's Love".
The single was announced on 27 August 2020 through Guetta's social media platforms, and made available for pre-save on streaming platforms. The track was previewed on TikTok prior to release; Guetta added a statement, saying; "What I love is being in the studio and making music, especially here in Ibiza. Tell me what you love. Tell me what you love, show me what you love. Send me your videos, anything you're passion about. I think life is nothing without a passion and I want us to celebrate life together". Regarding the song release, Guetta stated that "during this time of isolation, I've been incredibly inspired to release music that has an uplifting energy".