▁composition ▁by ▁the ▁Finn ish ▁composer ▁A ul is ▁S all inen , ▁who ▁wrote ▁the ▁piece ▁from ▁ 1 9 7 8 – 7 9 ▁for ▁a ▁commission ▁from ▁the ▁City ▁of ▁Tur ku , ▁to ▁celebr ate ▁its ▁ 7 5 0 th ▁anni versary . ▁The ▁Tur ku ▁Phil harm onic ▁Orchestra ▁premier ed ▁the ▁work ▁on ▁ 9   August ▁ 1 9 7 9 , ▁under ▁the ▁direction ▁of ▁its ▁principal ▁conduct or , ▁Per tt i ▁P ek kan en . ▁ ▁Str ucture ▁ ▁The ▁sym phony ▁is ▁in ▁three ▁movements : ▁ ▁And ante ▁poco ▁gioc oso ▁▁ ▁D ona ▁no bis ▁pac em ▁( att ac ca ) ▁ ▁Finale ▁ ▁Inst rument ation ▁ ▁According ▁to ▁the ▁publish er , ▁Nov ello ▁& ▁Co , ▁Sym phony ▁No .   4 ▁is ▁scored ▁for ▁the ▁following : ▁Wood wind : ▁ 3   fl utes ▁( 2   d ou bling ▁pic colo ), ▁ 3   ob o es , ▁ 3   clar in ets ▁in ▁B ▁( 1   d ou bling ▁B ▁bass ▁clar inet ), ▁ 3   b asso ons ▁( 1   d ou bling ▁cont rab ass oon ) ▁Br ass : ▁ 4   horn s ▁in ▁F , ▁ 3   tr ump ets ▁in ▁B , ▁ 3   t rom b ones , ▁ 1   t uba ▁Per cussion : ▁timp ani , ▁ 3   per cussion ists ▁(