1983 brought several significant developments
to the world of hip-hop. As the rap movie
Wild Style
hit the big screen and Herbie Hancock and Grandmixer D.S.T.
released the jazz-hip hop fusion hit "Rockit", Queens-based
rappers Run-D.M.C. hit rap squarely over the head with the
new, hard-edged, aggressive sound of "Sucker M.C.'s"
and "It's Like That".
D.M.C. of Run-D.M.C. - Read more about them
here

When Queens-based Run-D.M.C. released "Sucker M.C.'s"
/ "It's Like That", they introduced a new, hard-edged,
aggressive sound (and style) to rap. Unlike many of hip hop
releases of the day, this record, wasn't funky, there was
no discernible bass line, and these guys shouted, delivering
their rhymes over a thundering beat. Run-D.M.C. tough sound
found an audience among hip hop and even rock fans, and their
rise to fame over the course of the next year coincided with
the waning popularity of the old-school style.
"Rockit"

The tentacles of hip-hop reached farther into the mainstream
with the Herbie Hancock/Grandmixer D.S.T. crossover dance
single "Rockit", which was released in 1983. The
first jazz-hip hop fusion, this scratch-driven instrumental
single was an enormous hit.
"Wild Style"

Directed by Charile Ahearn, the 1983 independent docudrama
Wild Style introduced hip-hop music and culture to the rest
of the world. Appearing in he film were such pioneering hip-hop
artists as Grandmaster Flash, Fab 5 Freedy, the Cold Crush
Brothers, Grand Wizard Theodore and Fantastic 5. Aside from
music,
Wild Style also showcased other, equally important
elements of hip-hop: the artwork, the dancing and the-street
style fashion. Taken from
Harper's Bazaar, this magazine
clipping shows that
Wild Style had successfully caught
the attention of the movie-going, music-listening (and magazine-reading)
public.