Ryoji Ikeda-datamatics [ver.2.0], 18 Apr / 19:30 / Barbican H all Booking: www.barbican.org.uk/music/contemporary.asp datamatics [ver.2 .0] is the latest audiovisual concert in Japanese artist Ryoji Ikeda’s data matics series‚ an art project that explores the potential to perceive the i nvisible multi–substance of data that permeates our world.