ind ividual ▁instruments ?) ▁Str ings : ▁viol ins , ▁viol as , ▁cell os , ▁double ▁bass es , ▁har p , ▁cel esta ▁ ▁Record ings ▁ ▁To ▁date , ▁Sym phony ▁No .   4 ▁has ▁received ▁three ▁record ings , ▁the ▁first ▁of ▁which ▁is ▁from ▁ 1 9 8 4 ▁with ▁Ok ko ▁Kam u ▁conduct ing ▁the ▁Hels ink i ▁Phil harm onic ▁on ▁the ▁Finland ia ▁label . ▁Finn ish ▁conduct or ▁Ari ▁Ras il ain en ▁has ▁also ▁recorded ▁the ▁sym phony ▁as ▁part ▁of ▁c po ' s ▁comp end ium ▁of ▁S all inen ' s ▁orch est ral ▁works . ▁The ▁Four th ▁Sym phony ▁joins ▁the ▁Second ▁( Op .   2 9 , ▁ 1 9 7 2 ), ▁the ▁Horn ▁Con cer to ▁( Op .   8 2 , ▁ 2 0 0 2 ), ▁and ▁Mau erm us ik ▁( Op .   7 , ▁ 1 9 6 3 ) ▁on ▁the ▁third ▁volume ▁of ▁the ▁c po ▁series . ▁ ▁Notes , ▁references , ▁and ▁sources ▁ ▁Notes ▁ ▁References ▁ ▁S ources ▁▁ ▁Books ▁ ▁CD ▁l iner ▁notes ▁ ▁Journal ▁articles ▁▁▁▁▁▁ ▁Category : Sym phon ies ▁by ▁A ul is ▁S all inen ▁Category : 1 9 7 9 ▁compos itions ▁S all inen ▁ 4 <0x0A> </s> ▁The ▁writing ▁systems ▁of ▁Africa ▁refer ▁to ▁the ▁current ▁and ▁historical ▁practice ▁of ▁writing ▁systems ▁on ▁the ▁African ▁continent , ▁both ▁ind igen ous