This was broadcast this morning (1st April) on BBC Radio 4, but you can listen again via the web:
http://www.bbc.co.uk/radio4/arts/pip/2pfhl/
The 30 minutes features many quotes from Ian Anderson, which makes you think they struggled to get interviews with many prog rockers. Even Ian says he never saw 'Tull as a prog rock group.
However, how many Saturdays do you get sit down and listening to 'A Passion Play' being played on the radio
(Sorry for my complete lack of German in my posting, the curse of being 'english' speaking
My Wizard - History of Prog Rock (feat. Ian Anderson)
Moderator: King Heath