African cross-rhythm is most prevalent within the greater Niger-Congo linguistic group, which dominates the continent south of the Sahara Desert. (Kubik, p. 58)  Cross-rhythm was first identified as the basis of sub-Saharan rhythm by . Jones. Later, the concept was more fully explained in the lectures of Ewe master drummer and scholar . Ladzekpo, and in the writings of David Locke.  Jones observes that the shared rhythmic principles of Sub-Saharan African music traditions constitute one main system .  Similarly, Ladzekpo affirms the profound homogeneity of sub-Saharan African rhythmic principles.  In Sub-Saharan African music traditions (and many of the diaspora musics) cross-rhythm is the generating principle; the meter is in a permanent state of contradiction.
Thank you to everyone who contributed original samples over the last two years. I've listened to every sample (over 20GB of uploads in total) so as to organize and integrate only the very best 500 MB of these sounds.