If you are looking at a specific YouTube upload (like the one often numbered "12" in various Schlager collections), you'll likely see her performing in classic 70s glam—lots of hair, glitter, and expressive stage presence.
It’s a perfect example of the "ZDF-Hitparade" era of television, where performance and personality were just as important as the hook. 12 Ireen Sheer Heut` Abend hab` ich Kopfweh YouTube
Ireen Sheer, a British-German powerhouse, was at the peak of her fame in 1979, having just come off a successful Eurovision run (representing Luxembourg in '74 and Germany in '78). If you are looking at a specific YouTube
Released in 1979, the song leans into the disco-pop influence of the era. It’s bouncy, orchestral, and features Sheer’s signature clear, powerful vocals. While the title suggests a somber mood, the melody is actually incredibly catchy and upbeat—making it a staple of German "Evergreens" playlists. Released in 1979, the song leans into the