For those of you interested in the topic, one of my yahoo groups (r-f-w) has been discussing the use of musical instruments in the public worship of God.
I have included a few links that have come up during the course of the discussion. They are worth looking into for those interested in the topic of worship.
GI Williamson and others on Instrumental Music http://members.aol.com/rsichurch/worship.html
John Kennedy on Instrumental Music
John M'Donald on Instrumental Music
Brian Schwertley on Musical Instrumentation