29 a) was performed together with a work by Tōru Takemitsu and a work by Isang Yun in the concert, Orient Occident in Teatre Lliure in Barcelona in April and May in 1992.
In addition to 29 b), a collaboration between Tōru Takemitsu and Isang Yun took place during the Orient Occident concert at Teatre Lliure in Barcelona from April to May 1992.