23. T La Rock and Jazzy Jay "It's Yours" (1985)
Producer: Rick Rubin
Label: Def Jam Records
"It's Yours" is an iconic song because it was actually the first tune ever released by Rick Rubin on Def Jam, back in 1984, before the now legendary producer had linked with Russell Simmons, and before the label was actually.... well.... a label. The track was mostly an underground hit at the time, but was hugely influential because T La Rock was a much more lyrical MC than most who were big at the time, and the song's production was largely composed of breakbeats and scratches. It had no melody. It was a sound that Rubin would hone in on in the coming years, and it came to define Def Jam during the 80s.