dear musician of mezo
you defenitely connected with the label eg emi
so you can ask to buy with discout one of two recordorng not to download BUT to listen for a smallmoney

as it can be done in classicarchive you can ask

to listen as well as they need
and to do that again 
it will cost the less money
eg  this can be done frothe centre of the emi
2-
you have difficulties to play to particular concer
no problem
order alll waht do the emi have
and evenask via emi to listen the rca records for money in interchange
and go play with the place you need in in the smartfoe 
or computer legally

3-if not so play some bars with the first violin before the concert
playing with the aiphone

4-ifnot with direttore da orkestra