Venice Pavilion: Note Persistenti

As you walk in, you can type a thought on an iPad. Software reads the emotion in it and picks one of 40 short pieces Dardust wrote, so a self-playing piano answers you with a melody. It's the only guestbook in Venice that replies on the piano.

The City of Venice's own pavilion in the Giardini starts at a pool outside the building, then moves through four sections meant as four sides of the city. Alberto Scodro shows what lies under it, in sculptures fused from sand, glass and pigment that look like sediment. Ilya and Emilia Kabakov's Venetian Diary fills themed vitrines with everyday objects lent by residents, each with its owner's story. Finalists of Artefici del Nostro Tempo, the city's prize for artists under 35, have a space of their own.

Dardust said at the opening that his full piece, SommersiVo, plays every 55 minutes. Entry is included in the Biennale ticket, Tuesday to Sunday, 10am to 6pm, until 22 November.