Everything is important to make a great enjoyable recording.

1. The Master should to be recorded with high enough resolution using at least 24 Bit 88.2kHz PCM, DXD or preferably DSD to accurately capture the music being presented. If recording in the analog realm the highest quality mastering tape run at 30 or 15 IPS should be used.
   
2. Microphones with the smoothest and widest frequency response should be used, at least to 40kHz or if on hand some of the newer microphones that extend to 100kHz.
3. The concert hall or room, needs to be studied and mapped for correct microphone placement and this can take up to a week to do in a hall a record company has never recorded before.
4. Get the balances and everything else correct BEFORE the start recording with an aim to make a photographic recording using as little mixing and editing as possible. Fixing it in the mix is what decreases the spontaneity and realism of many recordings.
5. Keep everything high resolution digital or high resolution analog until the end product.
6. That end product should be an SACD, LP or at the very least a high resolution download. Releasing it only on CD sacrifices most of the work done in steps 1-5.