What is the fine-grained topic of the following text: The Church’s accidental signature tune, Under The Milky Way, is like a lighthouse on the brink of a continent forever to be discovered: 25 albums over 35 years and countless diversions that have almost destroyed them a dozen times, yet always reaffirm a mutual commitment to an uncompromising and unparalleled act of creation. Only return the topic.
"The Church Band's signature tune 'Under The Milky Way' and their musical journey"