He has written eight numbered symphonies since -- a symphonic cycle of the Symphonies Nos. NUMBER@1 -- NUMBER@2 -LRB- NUMBER@3 -- NUMBER@4 -RRB- , a Symphony No. NUMBER@5 titled the MISC@1 ' -LRB- NUMBER@4 -RRB- , a Sinfonia Concertante -LRB- NUMBER@6 -RRB- , as well as the series of ten Strathclyde Concertos for various instruments -LRB- pieces born out of his association with the ORGANIZATION@1 , NUMBER@7 -- NUMBER@8 -RRB- .

He has written eight numbered symphonies since , a Sinfonia Concertante -LRB- NUMBER@6 -RRB- , as well as the series of ten Strathclyde Concertos for various instruments -LRB- pieces he wrote when he worked with the ORGANIZATION@1 -RRB- .
