Known as the loneliest whale in the world, the so-called 52 hertz whale has a call that the rest of its species cannot hear. But this enchanting play – revealing how one man came to live on an isolated research station listening for that unique song – has a lilting melancholy that will engross you from the outset. With four excellent musicians evocatively recreating the sounds of the sea and the sixties-era rebelliousness which was a backdrop to the protagonist’s earlier life, the production’s music is worth a ticket in itself. Yet that is just one element of a superbly told, incredibly poignant story about sound and silence that will resonate long after the performance has ended.

Zoo, until 26 Aug (not 14), 5.15pm.
tw rating 5/5 | [Sarah Richardson]