My two Gt Aunts (both spinsters) took me to see Lonnie Donegan at the Cliffs Pavillion in Southend On Sea when I was just a wain.
Re your comments about 'If LD had not recorded...' it does seem to be the genre in any documentary these days, a sort of extra justification.
The Beeb is worth checking out on a regular basis as they often have music orientated documentaries on BBC Radio 4 arvived for a week after broadcast. I lsiten to them during the day as I work at home in Perth.
BBC Radio 4 documentaries