Often before the chorus in a song, you have a build-up of emotion caused by the chord structure as well as the volume and intensity of the recorded music. Here’s a video that shows you how to create the kind of build you would likely hear in electronic Dance Music (EDM). It uses the Massive software synthesizer, from Native Instruments. Massive is hard to get now as a stand-alone purchase, but it is included in several other NI products, such as their Maschine Groove Production Studio and the Komplete Virtual Instruments and Effects Collection.
Anyway, below is the video showing you how to create the builds: