I haven't heard Frankie Armstrong's recording so far as I can remember, so this is getting a bit confusing.  On the other hand, a lot of the tunes given with DT files are unattributed, and some definitely do not belong with the texts given; it seems to have been considered that any tune was better than none.  I am on record as believing that it's better to have no tune than that the wrong one should be presented as if it were authentic; I do seem to be in a minority, though.  I do rather suspect that the recent drive for "missing tunes" is going to result in a lot of song texts having tunes wished upon them to which they have never been sung.  I wonder who will sort all that out in a few years' time...