Thanks again to all for taking time to reply.
After some research, I worked out how to do what I wanted and create a list in Excel.
However, I now have another problem: this time at least smaller!
First of all: I uninstalled, then re-installed MP3 Tag.
Then I created the 'csv' file, then Convert > Text..Tag and transferred.
All information transferred correctly EXCEPT:
The column headed 'Length' (= Track Time) displayed correctly MP3Tag eg 01:23
I included 'Length' in the 'Format String' box during Conversion.
'Length' is chosen from 'Extended Field' list
However, when transferred, it did not show the Track Time in each cell but rather a three-digit number which bore no relation to the relevant Track Time!
Can someone tell me why and how to fix this?