DW is an on-going cycle of Bernhard Lang's pieces, where composer explorespossibilities of loops and repetitions, which became his compositional trademark. Songbook I is another piece where Lang highly involves his patterns from Jazz and Pop music, transformed through “damaged beats”. "For many years one of my main influences beside the work of Philip Jeck were the movies of Martin Arnold: they more or less became the trigger for the series of pieces called Difference/Repetition