This is a variation on p. 68-69 of Royal Hartigan's book, West African Rhythm's for drumset.  The right hand plays bell patterns and switches from the Ewe bell pattern Ga bell pattern halfway through.  The bass drum is playing the alternate bell patterns and switches every 4 bars (of 12/8).  The left hand is playing a pattern from the beginning of the chapter (a pattern adapted from 4/4) and strikes the snare drum on the 2nd and 3rd partials of each beat.  For instance counting to 12 in 12/8 the snare strikes on beats 2,3,5,6,8,9,11,and12.  The left foot is playing on beats 2 and 4 (if counting in 4/4).  I messed up twice.  Played the final bass drum pattern with the Ewe bell twice as long (8 bars) and the first bass drum pattern with the Ga bell pattern too long (also 8 bars).  Leave me some feedback or try out this idea at home if you own the book and feel so inclined.  Thanks

Rory Robert Harding