Sound identity is the soul of a wind band, it's the extra something which makes the difference.
Our world has many different languages, music is a big part of the language world. We recognize foreign languages straight away just by listening to people speak, this should happen also in music.
When we listen to a recording we should be able to understand which wind band is playing or at least from which Country it comes from.
To do so, we must take care we have sufficient knowledge about the musical carachteristics which can help us capture the identity.