Create a whimsical illustration for a birthday, where a group of fluffy felines shines as the stars of the show. Each of these cats sports a studded collar and boasts wild, spiky fur that gives them a punky edge. They're not ordinary cats, however; they're a heavy metal band in a world of their own. The band's vocalist, a rather grumpy-looking cat, tightly holds onto a microphone stand that's adorned with floating birthday balloons. In a world of colorful confetti, a kitty guitarist fiercely strums a miniature electric guitar, while a drummer cat, drumsticks at the ready, sits behind a drum set featuring a 'Happy Birthday' banner stretched across the front. It's a harmonious blend of cuteness and rock 'n' roll, celebrating a one-of-a-kind birthday with a touch of heavy metal madness.

Generated with these themes: Heavy metal cats.

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