There are numerous thoughts on this out there. What I've learned is this, do what works.
What does that mean? If possible, plan all the songs with one theme that's in common. If it's not possible, then try to let the last two or three songs be on the same theme. If we, as worship leaders, do our part to focus the thoughts and praises of the congregants in one directions, then we are more likely to enter the Holy of Holy's.
Acts 2:1-2
And when the day of Pentecost was fully come, they were all with one accord in one place. And suddenly there came a sound from heaven as of a rushing mighty wind, and it filled all the house where they were sitting.
Acts 2:1-2 tells us that they, the ones that had stayed in the upper room praying after the Savior ascended, were in one place, and with one accord. This tells us something significant. All those in that room were focused on one thing. Everyone was on the "same page" as the person beside them. Some ministers say it like this, "they were in one mind." Others say it this way, "they were in unison in their prayers and worship." Either way, it's the same thing. They were desiring the same thing.
As worship leaders, we need to focus those we are leading to a singular point. We have to get everyone on the same page and desiring the same thing. Yes, it's difficult, especially when we have to compete with social media, political points of view, and we have to inspire those that refuse to grow in Christ to examine themselves and realize that they are not where they need to be. We have to hear complaints of , "The music sounds too much like Rock-N-Roll," or, "Everything was just too loud," and even, "The music had too much of a country-western feel too it." These examples are almost always followed by the sentence, "I just couldn't worship because of it." These are also things we have to overcome.
I feel that if you can use a hymn or part of one or two in the services, then you need to try to do so.
For example....I would start out with the Call to Worship being Friend of God, written by Israel Houghton. It's an upbeat song that starts off with the theme that we want. Once the service gets to the worship set, I would lead off with something like Open up the Heavens, by Meredith Andrews, then go into either Cornerstone, from Hillsong or Your Presence is Heaven, by Israel Houghton. Next I would slow things down a bit more with just the chorus to the hymn, What a Friend We Have In Jesus. I would end with either the chorus to the hymn, I Surrender All, or the chorus to He's All I Need. I might would include both. All these songs point to being His friend, being in His presence, or His supremacy. At the end of the worship set, the last two songs declare that we need Him, and He is all we need. The other songs just support these two....
You must consider those that you are leading though. Their individual tastes in music also help indicate what my be effective for them to worship with. However, if someone says that they cannot worship to a particular style of music, then do not concern yourself with that person...they are focused on satisfying their taste in music, not the Most High God with praises.
Consider your sets. First of all, pray for guidance. Secondly, consider the keys and abilities of the musicians you're using that day. Thirdly, start off faster, and end slower...this promotes a more intimate worship. Fourthly, keep to a theme where possible. And fifthly, make sure the songs resonate with your congregants.
All these things play vital roles in how each service is conducted. They also help to focus or distract from true worship. Learn how to be flexible in the style's of music.
After all, we want everyone in, "One Mind and One Accord!"
