FLUX AI Image générée par Flux.1 Dev

Alexander Rosenbaum concert in a vintage theater or jazz club. Warm, authentic atmosphere: brick walls, velvet curtains, dim golden lighting. Rosenbaum in a classic suit with a guitar, his face softly lit by spotlights. In the foreground – audience at tables with wine glasses, some singing along. In the background – retro vignettes, perhaps an old piano. Style: vintage photography with light grain, warm tones (amber, burgundy, dark wood)