afrika bambatta my choice.
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yes sir, you on point... along with newcleus, space cowboy, cybertron, and jonzun crew, etc... you had a whole era of this space rap back in the late 70s / early 80s...
later years...
ultramagnetic was on it... (so kool keith is a longtime trendsetter)
x-clan would be another trendsetter of the newer rap eras...
digable planets... (spaces and places we fly... )
these are some of the majors...
peace
brainstorm - the afronaut