One reason on why the style of Roman temples aren't suitable for Christians is because they're not built like churches, churches have an enormous amount of space and they're made so that people can stay indoors. Whereas, in Roman temples most activities are held outdoors.
Musicians use a time signature to specify the number of beats in a measure (also called a bar).
Take EDM for example; it's a combination of words and sounds all cramed together to create a piece of music, most of the time it has no official reason or back story but is simply made to be enjoyed. This concept is the same with Jazz music. When jazz was invented there was no definitive reason or way to play it, you just grabbed an instrument and started playing whatever cords and rhythms you thought sounded nice.
