Digital music technology has transformed the listener experience and creatednew avenues for creative interaction and expression within the musical domain.The barrier to music creation, distribution and collaboration has been reduced,leading to entirely new ecosystems of musical experience. Software editingtools such as digital audio workstations (DAW) allow nearly limitlessmanipulation of source audio into new sonic elements and textures and havepromoted a culture of recycling and repurposing of content via mashups andremixes. We present a multi-touch application that allows a user to customizetheir listening experience by blending various versions of a song in real time.