Sir Brian May and Roger Taylor have given brand new interviews in the weekly official YouTube series, Queen: The Greatest.

The latest episode marks Bohemian Rhapsody’s 50th anniversary by continuing to cover the band’s lead up to their most iconic anthem.

And now the guitarist and drummer reflect on another track from their 1975 studio album, A Night the Opera.

In fact the track turns out to be Queen’s longest song at 8 minutes and 21 seconds, exceeding Bohemian Rhapsody by 2 minutes and 22 seconds.

Penned by Sir Brian after a dream about the Noah’s Ark flood, The Prophet’s Song also expresses the rock star’s fears about humanity and its lack of empathy.

Sir Brian candidly confessed: “I have a massive insecurity about meself as a songwriter. I think I only occasionally hit it. And with The Prophet’s Song, it was right on the edge. I could hear something in my head, but I couldn’t quite grasp it. And it did come from a dream… It was tough. I found that very difficult to put together. I kind of felt isolated because I couldn’t explain it to the band either. Freddie was pretty good at explaining his stuff. I had problems with the Prophet song, but I’m pleased with how it came out.”

Sir Brian added: “But that was kind of agony. I remember wrestling with all the different pieces – how each chorus ends in a different way, and where does it go – but it was a wonderful challenge to get Freddie to do that canon stuff, which he does in the middle… Freddie was very supportive in getting into those experiments.”