Tracy Numbers

39 days ago 2 views ongoing by Tim Bray www.tbray.org

Tracy Numbers

Here’s a story about African rhythms and cancer and combinatorics. It starts a few years ago when I was taking a class in Afro-Cuban rhythms from Russell Shumsky, with whom I’ve studied West-African drumming for many years. Among the basics of Afro-Cuban are the Bell Patterns, which come straight out of Africa. The most basic is the “Standard Pattern”, commonly accompanying 12/8music. “12/8” means there are four clusters of three notes and you can count it “one-two-three two-two-three three-two-three four-two-three”. It feels like it’s in four, particularly when played fast.

Here’s the standard bell pattern in music notation. Instead of one 12/8 bar, I’ve broken it into four 3/8 chunks. Let’s call those “mini-measures”; I’ll use that or just “minis” in the rest of this piece.

Bell patterns are never played in isolation, but circularly on fast repeat, so the first note immediately follows the last.

In the sound sample, I’m playing a background beat on a conga, emphasizing the beginning of the 12/8 measures. The actual bell pattern is on the high “child” bell of a Gankoqui, an African dual-cowbell set.

“þ” the cat was trying bell patterns but unfortunately

cats