Gorillaz Istanbul Concert Poster

Create a gritty alternative concert poster for band_name in Istanbul, blending rough pencil concept art with punk street-poster typography. Use a vertical 4:5 canvas on warm off-white aged paper with subtle speckles, scan texture, and faint smudges. In the background, draw a very light graphite sketch of the Bosphorus Bridge spanning across the upper half, with thin construction lines and delicate suspension cables. Across the middle foreground, place exactly five standing figures in a lineup: 1) a slim blue-haired cartoon guitarist on the far left, relaxed sideways pose with hands in pockets, sunglasses, T-shirt with a star patch, loose jeans and sneakers; 2) a tall lanky black-haired cartoon singer next to him, spiky hair, scowling face, arms crossed, dark studded jacket, tight trousers and boots; 3) a shorter cartoon drummer in the center, helmet or cap with goggles, black bobbed hair, oversized jacket, skirt or shorts, striped socks and boots; 4) a large cartoon bassist to the right, wearing sunglasses and a cap, heavy jacket with sleeve patches, hands in pockets, broad stance; 5) a realistic photographed-looking adult male on the far right, dark jacket, black shirt, jeans, white sneakers, hands in pockets, slightly separated from the illustrated characters with a subtle cutout edge. Render the four cartoon figures as scratchy black ink and graphite sketches with minimal muted color accents, while the human figure is more photographic but still integrated into the poster texture. Cover the lower third with a huge hot-pink spray-painted brush title reading headline_text, tilted slightly and extending beyond the left and right edges, with rough bristle texture, paint gaps, splatters, and drips. Add small monospaced black event text centered along the bottom: event_details. Add a small circular hot-pink stamp logo at the lower right containing the words stamp_text. Along the upper right edge, add tiny vertical text: side_text. Keep the overall look raw, editorial, hand-drawn, zine-like, and high-fashion music-poster inspired; avoid glossy gradients, clean vector art, extra band members, extra text, or a polished corporate finish.