>>128193248
If it has an original harmonic arrangement (can use normal chord progressions but cant just be samples) and sung vocals (not chanting flat notes) then sure, but at that point you are getting into more RB territory.
The act of "raping" isn't musical. It just isn't. Its rhythmic "poetry" but even calling it poetry is a stretch, but I'll let you have that.
Let's take the first song off of Kendrick Lamar's semenal work, To Pimp a Monkey.
Is Thundercat's groovy bass line music? Hell fucking yeah.
Are Kendrick's 60 iq monkey chants music? No. He is soiling the song with his retardation. The instrumental is music, the rap is not.