Rastlos means "restless" or "uneasy". It's a descriptive adjective that captures a feeling of constant movement or a lack of peace.
In the song, Trettmann asks, "Was macht mich so rastlos?" (What makes me so restless?). This word perfectly encapsulates the introspective and searching mood of the song, where the artist reflects on his journey, his losses, and his continuous search for meaning amidst a transient lifestyle. It's a more evocative word than simply saying "tired" or "busy".
Trettmann's "Billie Holiday" featuring KitschKrieg is a really honest look at staying true to yourself while navigating a world that often feels empty. He talks about how he's always been independent, following no one, because everything else is "Schall und Rauch" [sound and smoke] – just noise. He's got what he needs: "Den Traum, das Kush und die Lilanen" [the dream, the kush, and the purple ones (money)]. Even though he's often on the move, feeling the "Walkin' Blues" as the street calls him, he'd do it all again, especially for those nights and memories that mean so much more than anything else.
This song also touches on a deep sense of loss and searching. Trettmann sings about losing his home and looking for a new one, even though everywhere he goes feels the same. There's a real feeling of loneliness in the city, where "Keine Liebe in diesem Dschungel" [no love in this jungle]. He feels a connection to Billie Holiday, needing a song he can truly feel, and admits that saying goodbye isn't hard anymore because the city itself is so fleeting and empty. He's trying to figure out what drives him, wondering if he's just chasing lost time and why he's so restless, feeling misunderstood even after telling everyone who he is.