"Cold Heart (PNAU Remix) [Mixed]" is a collaboration between Dua Lipa and Elton John that features a combination of Elton John's classic track "Rocket Man" and Dua Lipa's hit song "Levitating." The lyrics of this remix add a new layer of meaning to the original songs.

The song explores the concept of a cold heart that has been hardened by a past love or relationship. Elton John's opening verse sets the tone, describing a sense of longing and temptation that lingers even when things go wrong. The scent of someone significant, perhaps an ex-lover, can trigger memories and emotions.

The chorus, sung by Dua Lipa with Elton John, draws from "Rocket Man" and represents a feeling of detachment from one's true self. The line "I'm not the man they think I am at home" suggests a disconnect between the public perception of the artist and their true inner self. It implies that fame and success have created a persona that doesn't align with who they really are, which can be isolating.

In the outro, Elton John repeats the phrase "Cold, cold heart, hardened by you" as a reflection of the emotional walls built as a defense against getting hurt again. This line implies that the heart has become frozen, almost incapable of fully opening up to new experiences or people. However, there is a glimmer of hope as he sings, "Some things lookin' better, baby, just passin' through." This suggests that while the pain and guard of a cold heart remain, there is a recognition that positive change may be on the horizon.

Overall, "Cold Heart (PNAU Remix) [Mixed]" captures the essence of emotional resilience and the struggle to reconcile one's public image with their true emotions. It reveals the complexities of fame, love, and personal identity, highlighting the universal experience of trying to navigate through a world that often demands a different version of oneself.