ras ▁Guide ▁and ▁Green ▁Char ter . ▁ ▁Ann ual ▁Conference ▁ ▁The ▁A BO ' s ▁primary ▁event ▁each ▁year ▁is ▁its ▁annual ▁conference , ▁the ▁major ▁gather ing ▁of ▁the ▁classical ▁music ▁industry ▁in ▁the ▁UK , ▁with ▁around ▁ 3 0 0 ▁deleg ates ▁drawn ▁from ▁orch est ras ▁both ▁from ▁within ▁the ▁UK ▁and ▁abroad , ▁plus ▁fund ing ▁ag encies , ▁ven ues , ▁agents , ▁publish ers , ▁and ▁supp liers . ▁The ▁principal ▁media ▁partner ▁is ▁Classic ▁FM . ▁ ▁A BO ▁Trust ▁The ▁A BO ▁Trust ▁is ▁the ▁char itable ▁wing ▁of ▁the ▁Association ▁of ▁British ▁Or ch est ras ▁and ▁exists ▁to ▁support ▁its ▁work . ▁Its ▁rem it ▁includes ▁the ▁promotion ▁of ▁public ▁musical ▁education , ▁research ▁projects , ▁research ▁archive , ▁and ▁fund ra ising . ▁ ▁M embers ▁ ▁Full ▁members ▁ ▁Full ▁membership ▁of ▁A BO ▁is ▁open ▁to ▁professional ▁orch est ras ▁and ▁ens emb les ▁which ▁have ▁existed ▁for ▁not ▁less ▁than ▁two ▁years ▁in ▁the ▁UK , ▁and ▁have ▁undert aken ▁no ▁fewer ▁than ▁ 2 4 ▁public ▁performances . ▁ ▁Sub scription ▁levels ▁are ▁based ▁on ▁the ▁turn over ▁of ▁each ▁or chestra . ▁ ▁Associ ate ▁members ▁Associ ate ▁members ▁include ▁those ▁who ▁have ▁not ▁yet ▁ful filled ▁the ▁requirements ▁of ▁full ▁membership , ▁as ▁well ▁as ▁conserv ato ires , ▁music ▁colleg es , ▁youth ▁orch est ras ▁and ▁over se as ▁orch est ras . ▁ ▁Aff ili ate ▁members ▁Aff ili ate