There's a good article on Acts 29 Network to do with musicians in Church. In it Jeff Marsh gives the following headings;
Principle #1 - worship ministry is part of a bigger picture
Principle #2 - value your musicians and what your musicians value
Principle # 3 - don't give God the lame sacrifice
Principle #4 - let your musicians be musical
Principle #5 - grind your own cutting edge
Principle # 6 - create creativity
Principle # 7 - to God be the glory
Principle # 8 - be a leader
Principle #9 - embrace principles & explore methods
Read what he says under each of these headings at Acts29.