Siren Shimmer swaps seas for spotlight's snare, crooning captive till cagey cohorts—shifty chimp, sly seal—scheme splashy split from showman's shackles. Julia Donaldson's descant, dazzled by Lydia Monks's mosaic mermaids, marinates mutiny's melody, musing on melody's snare and solidarity's surf, surging young sirens toward self-sovereign symphonies sans servitude's stage.