(It later became a part of 'Hikari' [Licht in German], a very long opera which requires seven days to perform, on which he spent approximately 30 years for its completion in 2003.)
（後に、彼が約30年かけて2003年に完成させた、上演に7日を要する長大オペラ「光(Licht)」の一部とした。）