Balatko. the term measure means nothing to me , we don't use that term here. But here goes Foxtrot is 4/4. Waltz is 3/4. If it is Waltz we have a four bar introduction, sometimes it may be eight, other times it could be two, not very often. After the bar 4 on the introduction which is four lots of 123. The music will start with a heavy beat on the first 123. Including that first count there will be . 123 223 323 423 523 623 723 823 On a whole disk there will be eight of those blocks as above. Printed on the disc case there should be the speed the music is played at 28 bars per minute, and how many blocks of eight which is normaly eight blocks which is called eight bar phrasing. Again after the four bar introduction there are eight counts of 123 223 323 through to 823 I wish Alex Moore had written this in his book. Then i would not be writting this now. We here have a slight advantage because there is a style that does have a four bar intro And the dance can be 16 bars long and some thirty two. That means the dance which is a sequence dance can go for thirty two bars before starting at the beginning, and everybody on the floor knows that all need to be on the same step at the same time. It becomes very good training for the Standard dances.
No coach here in his right mind would give a couple a routine in the Standard Style that was not phrases correctly. I might add that the Samba is also, and has to be phrases correctly otherwise your out. Foxtrot count the same over four beats 1234 2234 3234 4234 throught to 8234. Putting a disk on is the only way to learn and see if you can pick where the phrasing starts. I am suggesting a dance recording her and not some Rap Dancing thing.