Considered to be one of the pioneers of dance-pop during the birth of K-pop, NRG (an acronym for New Radiancy Group), was a South Korean pop music group. Originally a five-member boy band consisting of Myung-Hoon Chun, Lee Sungjin, Noh Yoo-min, Moon Sung-hoon, and Kim Hwansung, NRG debuted in 1997 and underwent sporadic periods of activity and hiatus between 2000 and 2008 before going on an extended hiatus. In 2017 they regrouped as a trio to celebrate the 20th anniversary of their debut and released an extended play. NRG has been described as one of the greatest boy groups of the first generation of K-pop as their repertoire has been described as "high-energy dance music". Their songs notably sample elements of Eurobeat and electronic music. They are also the earliest known K-pop group to incorporate acrobatic stunts into their choreography.