Verrückt translates to "crazy" or "insane". While it can describe mental instability, it's often used in a more colloquial sense to express something wild, unbelievable, or even wonderful.
In this song, Vanessa Mai uses it to convey the intense and almost overwhelming feeling of missing someone, singing "Ist es nicht verrückt, wie sehr das einem fehlen kann" (Isn't it crazy how much one can miss that). It captures the emotional depth and intensity of her longing.
In "Oben," which means "Up" or "Above" in German, Vanessa Mai sings about missing someone who is no longer around. The lyrics paint a picture of someone longing to reconnect, feeling that it's been "way too long since we talked." Physical reminders like pictures and letters aren't enough to fill the void; the speaker notes that pictures can't hug her and she can't hear the person's voice when she reads their letters.
To feel closer, the singer goes to the "highest point in the city" and looks up at the sky. She wonders if the person she misses can see her and hear the same song, a melody she swears is playing just for them. She desperately wants to ask, "Are you up there?" but is also afraid of the answer, admitting that if the answer is no, she doesn't want to know. The song captures a powerful mix of hope, memory, and the pain of separation, as the speaker wishes she could turn back time just to hold their hand one more time.