From time-to-time I am asked “Mark, how do you go about selecting music for the worship services at Grace Bible Church (GBC)?” Well, in general, the music selected is based on the theme of the sermon. My purpose is for us as a congregation to have a unity of thought in our worship. With this in mind, I normally use two or three songs of praise to begin the service, and then find songs that help prepare our hearts for the sermon. A final song is selected in response to the message; maybe an application of the message or an emphasis on the Gospel! During this process, I usually come up with a list of a dozen or so songs that I then narrow down to a core group based upon previous usage, music style and a sense of how they fit together as a whole. I also pray, pray, pray that the Lord would help guide me through all this so that what is eventually used in the worship service will ultimately glorify Him and encourage His people!
The reservoir of music that I draw upon is primarily from the Trinity Hymnal and our church’s supplementary songbook (known as the “grey” songbook), which contains a mix of hymns and contemporary music.
By the way, I am in the process of updating the songbook, so if you have suggestions for additions, please let me know!
Blessings, Mark
P.S. In regards to my post earlier in the month on listing your top 3 hymns/songs, many of you had a difficult time (since you love so many!), so I will post your responses for the time being. 
I haven’t visited very often, but I am enjoying your blog.
Thanks, Mark!