>> When people hear my mixes, they all tell me there is no need to add an
>> extra step of "mixing the music".

> Right.  The thing is that when you add dialogue and effects, everything
> changes.  The music is, sad to say, less important than the dialogue so it
> gets mixed around the dialogue.

>> But someone says to me that it is much better to deliver stems to the
>> final sound ingeneer.

> Yes.  Give him your final mix also, though, just so he can hear what you're
> aiming for.

>> I was told to use LRC format to deliver the stems.

> Do you mean LCR?  Left center and right channels separated?

>> Can someone confirm what format would the final ingeneer is to expect
>>from the producer of an orchestral music? What is usually done?

> Normally I see folks who want Pro Tools files for all stems, and yes they
> want LCR stuff.

>> Is the LRC format usefull indeed?

> Yes, because all films are shown on three-channel systems.  Although, since
> the dialogue is mixed to the center, it's often good not to have anything
> arranged into the center while people are speaking.  The center channel is
> needed to center the dialogue.

>> What other advice could you give me in order to stay effective and to
>> give the engeneer all he/she needs and not more?

> Call the engineer and ask them!