One of Miles Davis' most experimental albums, On the Corner is a non-stop groove of trance-like improvisation on top of electronic looping/manipulation. While its sheer experimentation was new and not well received at the time of its release, "...it is now seen as a strong forerunner of the musical techniques of post punk, hip hop, drum and bass, and electronic music." Very unique record, and one of my favorites by Davis.

Here.