Many people find the concept of tempo confusing. Bit it can be easy. Think of clapping to a song. You’ll almost certainly be clapping on the beat. While you’re clapping look at the second hand of a watch and count the number of claps.
In one minute that number will be the tempo. So for an upbeat song such as a cha cha it will be 120. Look up a track using DancePicker’s tempo Picker and check it out. In no time you’ll be an expert on getting the tempo of a track. Even easier – there are loads of free apps that allow you to tap on the screen and tell you the tempo after a few seconds.