Any European commercial studio – that is, a facility for hire for the recording and/or mixing of music – that can report exemplary achievement(s) over the past 12 months. 

A roster of clients that have enjoyed wider, and demonstrable, success, as a result of the nominated studio’s contribution
A change in circumstance that has led to an obvious improvement of the operation’s fortune (i.e., expansion, investment, new management)
Pioneering a specific technology/methodology that has seen the studio grow in profile/revenue