Complex sentence: The musical collective from Munich has been active since 1969, although its story started in the mid fifties in Hof where Christian Burchard and Dieter Serfas met for the first time at the age of 10.
Split into simpler sentences: The musical collective from Munich is active since 1969, although it's story already started in the mid fifties in Hof. There Christian Burchard and Dieter Serfas meet for the first time at the age of 10.