Since I started composing I have always worked with series of tempos, even superimposed the music of different groups of musicians, of singers, instrumentalists who play and sing in different tempos simultaneously and then meet every now and then in the same tempo.
Karlheinz StockhausenRepetition is based on body rhythms, so we identify with the heartbeat, or with walking, or with breathing.
Karlheinz StockhausenAnd I'll never forget the first time I took the possibility to project sound every day for six or seven hours with special devices which were built for me.
Karlheinz Stockhausen