Have you heard of "whoa's" used in worship? There's a whole influx of modern worship songs that have this as a way to bridge between the lyrics. I know there's a whole theology of worship associated with non-lexical vocables (not proper words, almost onomatopoeia), and I agree that there is a way to worship God with these, but I personally think that "whoa", "oh", "yeah", "ooo" and other variants from the modern context of contemporary music have a greater difficulty finding its use in worshiping...