I've written on the holy stubbornness of corporate singing over at the Desiring God blog. Perhaps the best reason to read "Our Holy, Stubborn Song" is this: It is probably the only place on the Internet where you can read a quote from Buddy the Elf and CS Lewis in the same blog post.
Terrible as an army with banners, we’re a singing people on our way to the city that is to come (Hebrews 13:14).