▁Hall ▁orch est ral ▁premi ere ▁performance . ▁ ▁Education ▁and ▁performances ▁Do err feld ▁earned ▁degrees ▁in ▁classical ▁piano ▁and ▁composition ▁from ▁East man ▁School ▁of ▁Music , ▁Inter lo chen ▁Arts ▁Academy ▁and ▁Y ale ▁School ▁of ▁Music . ▁His ▁composition ▁teachers ▁included ▁Joseph ▁Schw ant ner , ▁Samuel ▁Ad ler , ▁Louis ▁And ri essen , ▁Jacob ▁D ruck man , ▁and ▁Martin ▁Bres nick . ▁ ▁Do err feld ' s ▁compos itions ▁have ▁been ▁performed ▁by ▁the ▁Baltimore ▁Sym phony ▁Orchestra , ▁Saint ▁Petersburg ▁State ▁Sym phony ▁Orchestra , ▁and ▁Lam ont ▁Sym phony . ▁He ▁has ▁been ▁a ▁featured ▁guest ▁of ▁the ▁North west ▁S inf on iet ta ▁and ▁the ▁M eth ow ▁Music ▁Festival . ▁His ▁piano ▁compos itions ▁have ▁been ▁performed ▁by ▁Ralph ▁V ot ape k , ▁winner ▁of ▁the ▁first ▁Van ▁C lib urn ▁International ▁P iano ▁Compet ition . ▁His ▁work ▁has ▁been ▁conducted ▁by ▁David ▁Z in man , ▁David ▁Alan ▁Miller , ▁David ▁E ff ron , ▁and ▁George ▁Ts ont ak is . ▁ ▁On ▁November ▁ 1 6 , ▁ 2 0 1 0 , ▁Do err feld ▁released ▁his ▁debut ▁album ▁titled ▁Time ▁and ▁Again ▁followed ▁by ▁A ▁Pass ing ▁M oment ▁and ▁Fl ur ious . ▁ ▁Awards ▁and ▁hon ors ▁Do err feld ▁received ▁awards , ▁fellow ships ▁and ▁hon ors ▁from ▁ASC AP , ▁Ban ff ▁Centre , ▁Del ius ▁Foundation , ▁Font ana ▁Arts ▁Society , ▁Mac D ow ell ▁Art ist