1) Acknowledges our need for God.
2) Celebrates Jesus as the fulfillment of that need.
If you are doing this in your worship, you are leading people toward experiencing the gospel, and therefore experiencing God. This applies to our singing, as well as to preaching and to our celebration of the sacraments. Over and over again as we worship, this rhythm is either right beneath the surface or explicitly displayed.
Musically, it may happen within one song, with two songs, or it may be a broad movement over an entire set. As you plan worship, look for this rhythm. Plan it into your worship. In this rhythm God is glorified. In it God comes to meet us where we are. In this rhythm we are ushered into God’s presence.