Final answer:
Run-D.M.C. distinguished themselves in hip-hop by incorporating a live rock guitarist, bridging rock and hip-hop genres, and conveying themes like overcoming racial boundaries and asserting dominance in the music scene.
Step-by-step explanation:
In the musical landscape of hip-hop, the mentioned hip-hop group, likely Run-D.M.C., introduced a groundbreaking approach by employing a live rock guitarist in their tracks, which was unlike the traditional method where hip hop DJs would only use rock tracks as part of their mixes. Their innovative blend of rock and hip-hop genres, especially evident in their rap remake of Aerosmith's 'Walk This Way', showcased a fusion that was not seen prior in hip-hop.
The music video for 'Walk This Way' was significant as it symbolically represented the bridging of two different musical worlds and audiences. The conclusion of the video, where the group leaves their own audience for an all-white audience, can also be interpreted as a commentary on racial boundaries and integration within the music industry.
In terms of lyrical themes, this hip-hop group often rapped about their superiority in the hip-hop scene, calling themselves the 'King of Rock.' This assertion of dominance is aligned with hip-hop's competitive nature and focus on establishing authenticity and prowess.
Unique elements introduced by this hip-hop group include the successful integration of rock elements into hip-hop, their approach to audience to challenge racial norms, and a brash lyrical style that pronounced their impact on music.