It took 16 years to finally figure out what was exactly sampled by Mobb Deep to create their classic record "Shook Ones Pt II". Thanks to super sleuth "Bronco", a member of the hip-hop forum the-breaks.com, he was able to identify the eerie bass/guitar line as a super slowed down and chopped up piano riff from the 1969 Herbie Hancock song "Jessica" from the LP "Fat Albert Rotunda".
Listen to the anthem "Shook Ones Pt II" below:
Now listen to first few seconds of "Jessica" below:
OK, so the Herbie Hancock piano bit sounds nothing like the sample on the Mobb Deep cut - UNTIL - you listen to the breakdown of the sampling, then slowing down, and then chopping of the piano line, creating a whole new riff in a whole new frequency. Listen below. Fucking genius.