, ▁once ▁r ung ▁they ▁will ▁sound ▁with ▁a ▁phenomen ally ▁long ▁decay . ▁Another ▁in vention ▁is ▁an ▁extra - long ▁bass ▁clar inet . ▁Ext ra ▁keys ▁sp ira led ▁around ▁the ▁instrument ▁allow ▁a ▁micro ton al ▁scale . ▁A ▁human ▁blow s ▁through ▁the ▁mouth pie ce ; ▁the ▁do z ens ▁of ▁extra ▁keys ▁are ▁played ▁via ▁computer . ▁In ▁ 1 9 8 7 ▁he ▁met ▁Con lon ▁N anc arrow , ▁composer ▁of ▁experimental ▁player ▁piano ▁music ▁un play able ▁by ▁a ▁human ▁pian ist . ▁Tr imp in ▁already ▁had ▁the ▁technology ▁to ▁convert ▁N anc arrow ' s ▁player ▁piano ▁roll s ▁into ▁M ID I ▁information , ▁thus ▁saving ▁their ▁contents ▁from ▁potential ▁d eter ior ation ▁and ▁dis aster . ▁ ▁Tr imp in ▁has ▁invent ed ▁machines ▁to ▁play ▁every ▁instrument ▁of ▁the ▁or chestra ▁via ▁M ID I ▁commands . ▁His ▁mechanical ▁c ello ▁can ▁achieve ▁virt ually ▁un not ice able ▁bow ▁changes , ▁and ▁his ▁M ID I ▁timp ani ▁can ▁be ▁rub bed ▁quickly ▁by ▁the ▁mal let , ▁for ▁a ▁timp ani ▁dr one ▁un ach iev able ▁by ▁human ▁hands . ▁Indeed , ▁his ▁pieces ▁do ▁not ▁generally ▁try ▁to ▁im itate ▁human ▁playing . ▁" What ▁I ' m ▁trying ▁to ▁do ," ▁he ▁has ▁remarked , ▁" is ▁go ▁beyond ▁human ▁physical ▁limitations ▁to ▁play ▁instruments ▁in ▁such ▁a ▁way ▁that ▁no ▁matter ▁how ▁complex ▁the ▁composition ▁of ▁the ▁timing , ▁it ▁can