What does a worship leader do?

Bob Kauflin has posted a very helpful series of 17 posts laying out what a worship leader does. In his first post he lays out the definition he has formulated to define what a corporate worship leader is...

An effective corporate worship leader,
aided and led by the Holy Spirit,
skillfully combines biblical truth with music
to magnify the worth of God and the redemptive work of Jesus Christ,
thereby motivating the gathered church
to join him in proclaiming and cherishing the truth about God
and seeking to live all of life for the glory of God.

For a more in depth look at leading worship by Bob Kauflin, check out his book "Worship Matters", (following the link you can freely download the foreword and chapters 1 & 2)