Short answers, pulled from the story.
The group consisted of Jazzy Jeff, Sha-Rock, D.J. Breakout, Guy Williams, Keith Keith, The Voice of K.K., and Rodney Cee. Sha-Rock later became known as Miss Plus One. This lineup performed on the show hosted by Debbie Harry of Blondie on the 14th of February 1981.
Funky 4 + 1 performed on Saturday Night Live on the 14th of February 1981. This historic appearance marked the first time a hip hop act performed on national television. The performance signaled the arrival of hip hop culture to mainstream media.
The song That's The Joint was released in 1980 and interpolated the melody from A Taste of Honey's Rescue Me. Music critic Robert Christgau of The Village Voice named it the best song of the 1980s. The track was ranked number 41 on VH1's 100 Greatest Songs of Hip Hop in 2008.
Sylvia Robinson, the CEO of Sugarhill Records, forbade the group from joining the tour due to concerns about their marketability. She cited the risks of exposing them to a wider audience as the primary reason for the decision. This move highlighted the tension between artistic ambition and commercial caution in early hip hop.
Funky 4 + 1 became the first hip hop group to feature a woman MC, Sha-Rock, who later became known as Miss Plus One. Her presence on the group opened doors for future female rappers and challenged the male-dominated narrative of the genre. This inclusion set a precedent for how hip hop could be marketed and distributed.