▁Orchestra ▁( pr on ounced ▁as ▁be e ▁rock ) ▁is ▁a ▁Belg ian ▁Bar o que ▁or chestra . ▁The ▁or chestra ▁comb ines ▁works ▁by ▁established ▁bar o que ▁compos ers ▁like ▁Johann ▁Sebastian ▁Bach , ▁Antonio ▁V ival di ▁and ▁Georg ▁Friedrich ▁H änd el ▁with ▁the ▁less er - known ▁re per toire ▁of ▁the ▁ 1 7 th ▁and ▁ 1 8 th ▁centuries ▁like ▁Georg ▁Philipp ▁Te lem ann , ▁Aless andro ▁Sc ar l atti ▁and ▁Giovanni ▁Batt ista ▁Per g oles i . ▁In ▁addition , ▁the ▁or chestra ▁focus es ▁on ▁giving ▁first ▁performances ▁of ▁new ▁music ▁written ▁with ▁its ▁historic ▁instruments ▁in ▁mind . ▁The ▁or chestra ▁also ▁has ▁a ▁reputation ▁for ▁cross - gen re ▁produ ctions ▁like ▁Early ▁Music ▁in ▁combination ▁with ▁theatre , ▁opera , ▁visual ▁art , ▁dance ▁and / or ▁video . ▁ ▁History ▁The ▁or chestra ▁was ▁set ▁up ▁in ▁Gh ent ▁in ▁ 2 0 0 5 ▁on ▁the ▁initi ative ▁of ▁har ps ich ord ist ▁Frank ▁Ag ster ib be , ▁double ▁bass ▁player ▁Tom ▁De va ere ▁and ▁man agers ▁Hend rik ▁Storm e ▁and ▁Tom as ▁B iss ch op . ▁The ▁basis ▁was ▁an ▁ur ge ▁for ▁renew al ▁in ▁the ▁world ▁of ▁Early ▁Music . ▁ ▁The ▁first ▁concert ▁B ’ R ock ▁Orchestra ▁took ▁place ▁at ▁De ▁Bij lo ke ▁in ▁Gh ent ▁on ▁ 3 ▁September ▁ 2 0 0 5 . ▁ ▁B ' R ock ▁Orchestra