th ▁centuries , ▁the ▁Hav an ese ▁Ul p iano ▁E str ada ▁( 1 7 7 7 - 1 8 4 7 ) ▁offered ▁viol in ▁less ons ▁and ▁conducted ▁the ▁Teatro ▁Princi pal ▁or chestra ▁from ▁ 1 8 1 7 ▁to ▁ 1 8 2 0 . ▁A part ▁from ▁his ▁activity ▁as ▁a ▁viol in ist , ▁E str ada ▁kept ▁a ▁very ▁active ▁musical ▁career ▁as ▁a ▁conduct or ▁of ▁numerous ▁orch est ras , ▁bands ▁and ▁oper as , ▁and ▁compos ing ▁many ▁contrad anz as ▁and ▁other ▁dance ▁pieces , ▁such ▁as ▁min u ets ▁and ▁val s es . ▁Similarly ▁to ▁E str ada ▁and ▁approximately ▁during ▁the ▁same ▁time ▁period , ▁José ▁Mer cedes ▁Bet anc ourt ▁( 1 7 ? - 1 8 6 6 ) ▁developed ▁an ▁active ▁career ▁as ▁viol in ist ▁and ▁professor , ▁as ▁well ▁as ▁conduct or ▁and ▁composer , ▁but ▁this ▁time ▁in ▁the ▁city ▁of ▁Cam ag ü ey . ▁Ald o ▁Jo aqu ín ▁G av ira ▁( 1 7 8 0 - 1 8 8 0 ) ▁was ▁also ▁a ▁prominent ▁viol in ist ▁and ▁professor ▁in ▁Hav ana . ▁José ▁V ander g utch , ▁Belg ian ▁viol in ist , ▁arrived ▁at ▁Hav ana ▁along ▁with ▁his ▁father ▁Juan ▁and ▁brother ▁Francisco , ▁also ▁viol in ists . ▁They ▁returned ▁at ▁a ▁later ▁time ▁to ▁Belg ium , ▁but ▁José ▁established ▁his ▁permanent ▁residence ▁in ▁Hav ana , ▁where ▁he ▁acquired ▁great