DS appeared in the Sakamoto's Radio Program on Oct. 30, 84

[Uponthisearth]

I recently found the link, but I don't know how to post it.
You need to register to listen.
http://www.nicovideo.jp/watch/sm7259712

Click "pink" bar to register, then click "grey" bar. This takes you to the register page.
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Secret question Fist one is "What is your favorite food?" then you need to type in your answer.

Hope this would help.

[Uponthisearth]

David and Steve appeared on the same radio program with Peter Barakan right after Japan's final concert in Japan, 83.

http://www.nicovideo.jp/watch/sm7253449

For my slow computer, it took more than a few minutes to download the file. So be patient.