Mark and I had a brilliant time this week speaking to Richie Castellano about his Band Geek Yes covers. Multi-instrumentalist Richie is passionate about Yes and a lot of other music and if you haven't seen his Band Geek YouTube channel, then what are you waiting for? It's amazing.

We chat about topics like:

• How does Richie choose songs to cover?
• What is the rehearsal and production process like?
• What have been Richie's favourite Yes covers?

So listen out for that conversation.

In a truly epic episode, as is appropriate for the 500th, Mark and I present a competition and have the privilege and pleasure to speak to not one but two Yes keyboard legends - founder member, Tony Kaye and present band member, Geoff Downes.

We talk to Tony about his recently-released and highly remarkable debut solo album, End of Innocence, as well as asking him some of the questions about Yes which have been keeping us up at night for years (well, not really).

Geoff Downes discusses new studio album The Quest which is, of course, a must-hear interview and there are lots of audio messages from Producers, Patrons and friends of the show to enjoy.

Miguel Falcao and David Pannell have very kindly provided brand new jingles and we think the episode is a fitting way to celebrate 10 years of the show.

We hope you enjoy it!

• What was the inspiration for End of Innocence?
• Why has Tony only now created his first solo album?
• What is Steve Howe's production like on The Quest?
• How successful does Geoff Downes think the new record is?

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

Produced by Wayne Hall, Jeffrey Crecelius and Preston Frazier

In the second part of our look at what Rick Wakeman did after leaving Yes for the final time, we welcome Yes author and classical music expert, Simon Barrow onto the show to discuss Rick Wakeman at Lincoln Cathedral.

Hopefully you have had a chance to listen to the album but if not, check out the videos below.

• Why is there a piano piece on this disc?
• How does the album sound?
• Was it all worthwhile?

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

Produced by Wayne Hall, Jeffrey Crecelius and Preston Frazier

This week Mark and I embark on another 'what did they do next' quest. Once again we come to Rick Wakeman and what he did after leaving the band in 2005.

So we discuss the next release from Mr. Wakeman which turns out to be a most unusual release, even for him.

Take a listen below and then join in with our assessment of the package next week.

Also, this week, you can't have failed to notice that Yes have released a second online single from the new album, The Quest. It's called Dare to Know and Marka nd discuss our first reactions to it in a special Two Pence. Let us know if you agree!

• What was Rick Wakeman doing in a cathedral?
• Can he even play the pipe organ?
• What is the new Yes song like?

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