Well what's going on here is that Bo Diddley, at a leisurely tempo, will play the rhythm with thefirst notee of each pair of quavers(eighth notes in American I believe) longer than the second: approximately twice as long in fact. So to notate this rhythm accurately, you probably should write it in 12/8. with each pair of notes as a crotchet-quaver (quarter-eighth) pair.Normally speaking peope would use 4/4 for convenience (maybe writing "swing rhythm" at the top, which means play the first note twice as long as the second). It is very intriguing, the Bo Diddley rhythm, isnt it? Embedded in much African music, the basis of the claves beat in Latin-American music, the calinda stick rhythm of the Caribbean, underlying the two=bar ending tags of English hornpipes, the way peopleknock on doors in England to indicate thatthe visitor is friendly: it gets around doesnt it