Ephemeral Whisper of the Cosmic Siren: Subtle, haunting, (monochrome), (a striking instance of Cosmic Horror, The Void-Summoned Minstrel), nebula and star clusters as a celestial stage, virtuoso with a sentient instrument:2.1 ethereal entity:0.4, translucent:0.2 musician, stardust-infused lyre, immortal:1.9, eyes like black holes, skin like a night sky, (silver and grayscale:2.1) cold shimmer, astrophysicist by day, eldritch horror aesthetics, hyperlapse, astrophotography, liquid emulsion, magical realism, medium format camera, 12k astro-imaging, computational photography, gallery-bound, expert luminance control.