Track 1: "April in Paris" highly reminiscent of the famous Basie version, right down to the "Pop Goes the Weasel" opening quote. Basie = Thad connections and it's from TJ's The Magnificent album.
Thanks for the information, Ken - and to Big Beat Steve for his input.
I have placed an order for a used copy of the Lees book, said to be in good condition, for £8.