Produced by Wayne Hall and Jeffrey Crecelius

'IT'S CHRISTMAS' as yer man sings in that song (which doesn't feature in our festive collection). Mark and I select a few prog or prog-related Christmas songs to rank in another totally pointless but fun seasonal activity.

• Is your favourite in our selection?
• What is 'proggy'?
• What is Christmassy?

Listen to the episode and let us know what you think!

Mark and I met someone who can fill in a few more gaps in the Yes story this week. We managed to track down and speak to Peter Woolliscroft who was only a short time into his studio engineering career at Advision studio in London when Yes turned up to record Tormato. He shares his recollections of the sessions which are rich and extensive and it was a pleasure to welcome him to the show. Listen out for revelations about Tormato and a little bit about Peter’s extensive list of work with some of the biggest names in rock and pop.

• How were things set up at Advision for Yes?
• Would it have been better to employ a producer?
• Who walked into reception accompanied by an avian pal?

Listen to the episode and let us know what you think!

This week Mark and I spoke to Chris Kimball about a 70s oddity in the Yes instrumental arsenal - Alan White's North drums. After restoring, playing and recording with these strange objects, Chris is ideally placed to explain why they look so weird and why drummers like Alan White were interested in using them.

It's another engrossing story from a very knowledgeable musician and it's packed with detail so I hope you enjoy it as much as we did.

• Why are North drums shaped like that?
• What were they made of?
• Why did they disappear?

Listen to the episode and let us know what you think!