Thanks Folks,
I had considered Audacity but I think it was a video editor I needed.
I did a few very bad videos with Windows Movie Maker several years ago. Unfortunately Movie Maker is no longer supported.
I found Filmora, but wasn't sure if it was suitable. It was at this point I reached out to the members of Basschat.
I'm currently giving shotcut a go. I'm having trouble putting the backing track into the time line, but I have to admit I'm a total dinosaur with regard to computers.
Many thanks for your advice, I will keep you posted, just in case someone else finds it useful.
Verb