Tension is a common theme in music. Suspended chords create tension. Strategically placed pauses generate tension. There are many ways to creatively cause tension in a song. So as songwriters, it is useful to know as many ways as possible to achieve a desired outcome. One useful way to create tension within a song is to use climbing scales. Scorecastonline.com has a nice post about how to use climbing scales and has a very recognizable example of it.
View Post: How to Create Tension with Climbing Scales