Reena Saini Kallat has opened a new solo exhibition at Chemould Prescott Road in Mumbai, running from 24 October to 21 November 2026. Titled Spectral Frequencies, the show is built around a major installation, Spectral Frequencies: Breathlines, made in 2025–26, that treats the universe as an archive of sound in which lost birdsong continues to echo after its source has gone.

Thirteen extinct birdcalls take shape as large-scale floating sculptures, their names and the dates of their last recordings inscribed in salt across the gallery floor. Among them is the solitary call of the Hawaiian Kaua'i 'Ō'ō bird, last recorded in 1987 as it sang for an absent mate. The thirteen emerge from a longer stream of 130 species' names, written in pencil along the gallery walls like a baseline frequency encircling the room.

The enquiry extends outdoors in Last Seen in Light, a sculpture that translates twelve soundwaves into a large-scale sundial, and into works on paper from the River Morphologies series of 2025, in which the dry beds of the Zayandeh, Limpopo and Yellow rivers are pierced by laser-cut soundwave forms drawn from archival field recordings of their former flows. Read through Jacques Derrida's idea of the trace, the show asks what persists after disappearance.

Kallat, who was born in Delhi in 1973 and lives in Mumbai, has long worked with maps, borders and archives. Her practice has returned repeatedly to sound as evidence — to what can still be heard, or measured, after the living source has disappeared. She is also showing concurrently in London, where Elsewhere is Already Here is on view at Richard Saltoun until 19 December.