Experimental music is a style of music that defines itself by opposition to other music styles. Many music lovers define their musical experience in opposition to other music styles,1 but experimental music bases its own characteristics not on rythmic or melodic patterns, or specific instruments, but on the very idea of difference. Experimental music is music that differs. And quite often, together with this idea of difference, comes the idea of surprise. The audience expects that songs or performances will contain something unexpected.