Douglas Tate died on the 16th November 2005.

You can read about him here:

http://harmonica.co.uk/SPAHTateTributeAug06.pdf

You may listen to his music here:

https://douglastate.bandcamp.com/album/an-evening-with-tate-and-collis

and spend an evening with him here:

https://douglastate.bandcamp.com/album/an-evening-with-tate-and-jenkyns

To mark theĀ  beginning of the 15th year since he died you may now download his book of Advanced Exercises and Studies for the Chromatic Harmonica here at no cost:

Advanced Exercises