I was reading a page on Keith Getty that recommended some books on worship:
In Logos:
Need to add to Logos:
Beyond Smells and Bells: The Wonder and Power of Christian Liturgy by Mark Galli
From Getty himself in Logos:
Sing! How Worship Transforms Your Life, Family, and Church by Keith Getty
Orthodox Bishop Hilarion Alfeyev: "To be a theologian means to have experience of a personal encounter with God through prayer and worship."