Mexican-Canadian electronic artist Rafael Lozano-Hemmer’s latest exhibition Obra Sonora ('Spanish for 'Sound Work') is currently showing at the Carroll/Fletcher gallery in London. As its name suggests, the exhibition uses sounds as its primary medium, with the four installations using multi-channel audio to panoramically deliver Big Data and crowd sourced vocals in an unconventional format.

In Pan Anthem hundreds of national anthems are poised to play as a viewer approaches. Individual moveable speakers are precisely arranged to visualise national statistics including population, GDP, land mass, and year of independence.

Last Breath is an installation designed to store and circulate the breath of a person forever, through a small brown paper bag. As a biometric portrait, the piece works as a living memorial to a respected poet or singer - in this case Cuban singer Omara Portuondo, of Buena Vista Social Club.

Voice Array is an interactive installation consisting of 1,856 LED lights controlled by 928 independent sound channels, visualising the voices of thousands of gallery visitors.
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Sphere Packing is a series of 3D-printed spheres the size of which is directly proportional to how prolific a certain composer was. Each sphere represents a particular composer, and contains a tiny loudspeaker for each of their musical works.

Big Data is not just a material for number crunchers, we've seen a number of artists adopting it for their practises. Artists Lauren McCarthy and Kyle McDonald, created Social Soul – a completely immersive digital installation that surrounded visitors with their own Twitter stream.