Blair has been both the initiator and main proponent of dancers, at an advanced level, using "rolling count". She agrues that this is also the count the musicians use. &a1&a2 etc rather than 1&2 etc This "unequal" splitting of the beat mimics "swing" which NOT an even divsion of the beat. Blair does not dwell on this, although she must be aware of it if she invokes musicians and how they play. A strict reading of the sheet music yields a different result than the notation, for example, of "moderate swing". I've got sheet music and over the next year may learn to play some of it. (bwahhh ha ha) I probably can't tell on these examples, which is why I ask.