I was listening to Radio Japan (02 April 2006 ~ 0100 UTC), and their musical show called "Pop joins the world" aired. They announced that it would be the last episode of the show, so I recorded what I could. Here it is:
radio_japan-pop_joins_the_world-last_show.mp3 (6.6 mb, 28 mins)
Please let me know if you come across a complete recording of this episode, because I liked the songs at the beginning of the show.