 Other large works by Stockhausen from this decade include the orchestral Trans ( 1971 ) and two music @-@ theatre compositions utilizing the Tierkreis melodies : Musik im Bauch ( " Music in the Belly " ) for six percussionists ( 1975 ) , and the science @-@ fiction " opera " Sirius ( 1975 – 77 ) for eight @-@ channel electronic music with soprano , bass , trumpet , and bass clarinet , which has four different versions for the four seasons , each lasting over an hour and a half ( Stockhausen @-@ Verlag 2010 , 24 – 25 ) . 
