I can't find or link in sound clips right now so I'll just type stuff out but hopefully can add in some examples later or send you in a PM if I can't post links and all that being new here. Now if you've got 4/4 count music there are 4 beats in a bar so bar goes |1 2 3 4|1 2 3 4|1 2 3 4|1 2 3 4 dancers count up to 8 but in music notation with bars you just go to 4 since the bar has four beats in 4/4 music. Those beats all are even except there's usually a slight emphasis on the 1 (that's how you know it's the one normally). Those notes are usually called quarter notes and four quarter notes make up a full bar in 4/4 time. Music doesn't only use quarter notes though so you can divide one quarter note into two eighth notes (that's where the one-a two-a type counting comes in for dancers often). You can also divide a quarter note even further into 4 sixteenth notes. So in the time it takes to play one quarter note you could also play 4 sixteenth notes, when you hear fast runs in classical music it's very often 16th notes. |1...2...3...4...|1...2...3...4...|1...2...3...4...|1...2...3...4... These bars are basically the same as the ones I wrote out earlier except now I'm marking 16th notes (it would get too cluttered writing out the 1,2,3,4 for each bar so I just write out the 1 and then have dots for 2,3,4 Normal unswung 8th notes take up 2 16th notes each, so same bar, still keeping the 16th note dots for reference but have put a semi colon where the pulse for the unswung 8th notes go (the a in one-a, two-a) |1.:.2.:.3.:.4.:.|1.:.2.:.3.:.4.:.|1.:.2.:.3.:.4.:.|1.:.2.:.3.:.4.:. When you have swung rythm the two 8th notes that take up a quarter note or a beat don't have equal duration. One borrows a bit of time from the next 8th note so the rythm isn't even anymore, it's swung. Bit like this |1..:2..:3..:4...:|1..:2..:3..:4...:|1..:2..:3..:4...:|1..:2..:3..:4...: However that notation isn't accurate either because the 8th note that's stealing a bit of time usually steals a bit less than a full extra 16th note and it does depend on the song exactly how much the 8ths are swung (or how uneven a pair of 8th notes is. Together they always fit in one count so it's still 4/4 music. It's much easier to describe this with examples, I'll try to add some in later. In lindy the triple steps are swung, as in the time between the steps is not even but follows the swung 8th notes, but this can only happen if the music actually swings. If the 8ths are not swung you end with a more of a cha cha cha rythm in the triple steps because no 1 is to be with the music and that' why I much prefer dancing lindy to swung music because I can really feel it in my body and the timing of my steps.