▁North ▁and ▁South ▁America ▁as ▁a ▁solo ist . ▁ ▁He ▁is ▁closely ▁associated ▁with ▁compos ers ▁such ▁as ▁Brian ▁Fer ney h ough , ▁Michael ▁Finn iss y , ▁Richard ▁Bar rett , ▁Chris ▁Den ch ▁and ▁L iza ▁Lim , ▁as ▁well ▁as ▁frequently ▁performing ▁such ▁compos ers ▁as ▁Pierre ▁Bou lez , ▁Hel mut ▁L achen mann ▁and ▁V ink o ▁G lob ok ar . ▁He ▁is ▁also ▁a ▁conduct or ▁and ▁co - direct or ▁of ▁the ▁ensemble ▁Lib ra , ▁as ▁well ▁a ▁member ▁of ▁the ▁EL IS ION ▁Ens emble . ▁He ▁also ▁often ▁performs ▁works ▁involving ▁singing ▁and ▁spoken ▁text ; ▁Richard ▁Bar rett ' s ▁work ▁Inter ference ▁explo its ▁both ▁his ▁vocal ▁and ▁clar inet - play ing ▁ab ilities , ▁and ▁he ▁gave ▁the ▁premi ere ▁of ▁A aron ▁Cass id y ' s ▁work ▁for ▁solo ▁voice , ▁I , ▁pur ples , ▁sp at ▁blood , ▁laugh ▁of ▁beautiful ▁lips . ▁He ▁has ▁also ▁performed ▁concert s ▁featuring ▁nin ete enth - century ▁mel od rama ▁works ▁for ▁speaker ▁and ▁piano , ▁not ably ▁with ▁pian ists ▁Mark ▁Kno op ▁and ▁Ian ▁P ace ▁and ▁s ung ▁li eder ▁by ▁Sch ub ert ▁and ▁Sch umann . ▁He ▁has ▁recorded ▁for ▁E TC ET ER A , ▁N MC , ▁and ▁ABC ▁Class ics . ▁He ▁has ▁also ▁written ▁on ▁music ▁for ▁period ical s . ▁ ▁He ▁lives ▁in ▁C ologne ▁where ▁he ▁is ▁a ▁member ▁of ▁the ▁ensemble