谢春花全新创作歌曲《心空空》独家登陆网易云音乐。作为新专辑《知非》第二首公开发行的歌曲，该曲仍由谢春花亲自作词作曲，将一场甜蜜又苦涩的梦境在其中娓娓道来。 “时而心空空，时而痛汹涌。” 醒来时恍若隔世，你于我，也不过一场虚无飘渺的梦。

”Summertime Sadness" is a song by American singer-songwriter Lana Del Rey, taken from her second studio album Born to Die. It was released as a single on June 22, 2012 through Interscope Records. The song serves as the third single in Germany and Austria. It also serves as the fourth single in Switzerland.

Eilish credits "Bury a Friend" as the main inspiration for its parent album, stating that "the entire album clicked" in her head when the song was created, and added that she "immediately knew what it was going to be about, what the visuals were going to be, and everything in terms of how [she] wanted it to be perceived. It inspired what the album is about." British rapper Crooks makes an uncredited appearance on the track. Eilish discovered the artist on social media; Crooks repeatedly tagged pictures of himself with the caption "Where's Billie at?" on her Instagram comments, prompting her to think "Who the fuck is this kid?" She decided to make his acquaintance and found him "super funny and [...] kind of cute" and the two soon became best friends.