Yeah it did, much like all forms of older music mutate into something different. The style of disco is gone but the remnants remain as house and to some extent techno. I am no music junky however, so I could be wrong.
Kind of, but house like hip hop has many influences because of the way it's produced.
But Hip-Hop in the early 80s turned into rap during the early 90s, then the God awful, and where many uneducated listeners get their angst from, "gangster rap" during the mid 90s with the rise of Snoop Dog, WuTang Clan, etc. Now we are seeing the return of true Hip-Hop, which Jay-Z is really a part of, that really stresses capitalism at its finest on one end, and the effects of capitalism on the other.
Just to add. Early hip hop got its roots from many genres. Disco, funk, soul, jazz, rock and early techno. Basically any song that had a few bars of a good beat. IMO, a true art form. And yes, the music is getting back to true hip hop, but the bragging and boasting in the lyrics is something I personally can't relate to and, frankly, am extremely bored with.
For those that want to know, Jazz/Blues turned into R&B (rhythm & blues) in the late 80s, then soul in the 90s.
This is a little misleading. R&B came from jazz, blues and gospel in the late 1940s and has been around ever since. Disco and funk were off-shoots of R&B.
Post disco and funk R&B AKA Contemporary R&B is influenced by funk, disco and early techno.
As for Jay Z, he's on my sh*t list right now. He's involved in a project here in Brooklyn that has been deemed one of the most abusive cases of eminent domain ever. Hundreds of people, including myself, are losing their homes and businesses so he can move "his" basketball team to Brooklyn. All told, many more will be displaced through gentrification, including many of those in the neighborhood he's from.