kpop1-3, Exercise 1: The 1992 debut

Model answer:

Members: Seo Taiji, Yang Hyun-suk and Lee Juno.
Debut: the song "Nan Arayo" (난 알아요, "I Know"), on an MBC talent show on 11 April 1992. The jury gave it the lowest rating, but the song and the album became a hit.
Wording: the article calls it "one of the first Korean rap songs" and credits the group with "pioneering the use of rap" in Korean pop. That is more careful than "the first", because earlier artists existed (including Korean-American acts with American-style music, mentioned in the K-pop article). "First" here best means first to reach a mass audience.

Sources: Wikipedia, Seo Taiji and Boys; K-pop.