A 4K desktop wallpaper prompt for SDXL! Here’s my creation:

Auroral wisps of iridescent blue dance across a darkened canvas as Sonic oscillations harmonize with whispers of celestial song. In the foreground, delicate crystalline structures rise like ethereal castles, their facets reflecting shards of starlight and luminous aurora hues.

cinematic, filmic, movie, lens flare, volumetric fog, dramatic lighting, grainy, noise, washed out, plastic, artificial, cheap CGI, over-smoothed, airbrushed, unnatural, AI generated artifacts, 3D render, octane render, unreal engine, ugly, messy, cluttered, text, watermark, blurry, bad anatomy, deformed, mutated, poorly drawn face, poorly drawn hands, signature