Here's an article on
Drum Theory (from
Music Theory Online) that
concentrates on how performances arise from the interaction of a master
drummer and a multi-cyclic ostinato.
Also, here's an analytic discussion of Anlo-Ewe Rhythmic Principles by C. K. Ladzekpo.
A lot of people are uncommonly devoted to
Looper's Delight is a web
site devoted to their obsession. Their
short history of looping music
is worth a gander.
bremsstrahlung | 2.1 C7 is a record label specializing in lower case sound -- music made from very small sounds. The site design is a lot of fun.