Weather Report was an influential jazz "fusion" band of the 1970s and early 1980s combining jazz and latin jazz with art music, ethnic music, r&b, funk and rock elements (in varying proportions throughout their career). Their music is demonstrative of high levels of compositional and improvisational skill.
At the begining of this track you can hear a well known part that Portishead used as a sample for their track "Strangers".