What is "hi-nrg"

Hi-NRG (pronounced "high energy") is a genre of uptempo disco or Electronic dance music (EDM) that originated in the United States and United Kingdom during the late 1970s and early 1980s.

As a music genre, typified by a fast tempo, staccato hi-hat rhythms (and the four-on-the-floor pattern), reverberated "intense" vocals and "pulsating" octave basslines, it was particularly influential on the EDM scene. Its earliest association was with Italo disco, which incorporated new American electronic sounds of post-disco and hi-NRG.