Audiovisual group of friends Rh+ presents experimental music and video productions in a form of multi-media concerts. The Sound of Blood is a result of the interactions of Rh factors, sound installations, computers, sampler, synthesiser and traditional instruments: flutes, violin, piano and electronically processed voices, but also loop audio tapes or sounds produced by various objects. In Rh+ compositions you can hear industrial noises, city and radio sounds. Apart from their own compositions the group performs their versions of classical pieces. The score of a concert consists of video films, realized by the group members especially for a given programme, projected onto several screens during the concert.