Bruno Mars, — Anderson .paak, Silk Sonic - Leave The Door Open

: Mars called .Paak on his birthday, saying he had "figured out that little hook" for a song. Despite being out celebrating, .Paak showed up to the studio to record.

The duo first bonded in 2017 when .Paak opened for Mars on the European leg of his . Bruno Mars, Anderson .Paak, Silk Sonic - Leave the Door Open

: They hit it off immediately, spending late nights jamming and exchanging "backstage in-jokes" that would later become song hooks. : Mars called