THE QUEEN raised eyebrows when an old-style iPod was spotted taking pride of place in her living room at her Balmoral retreat.

And now it has been revealed exactly which tunes she could be blasting through her docking station after her favourite song was revealed.

People have long wondered what type of music the Queen likes to listen to Credit: PA:Press Association

Last month, the music-playing gadget was seen perched on a sideboard inside her personal quarters as she met with the Governor-General of Australia in the Scottish Highlands.

At the time, it was thought music she may have downloaded on to the Apple product included songs by marching bands, bagpipes or even her namesake band Queen.

But according to royal expert Ingrid Seward, who has released a new book about the Queen and Prince Philip called My Husband and I, Her Majesty's favourite song is the Beach Boys classic California Girls.

She told Vogue magazine: "The Queen is a big fan of musicals, traditional hymns, and Scottish ballads, and even the Beach Boys’s songs, especially California Girls.”

Last month it was revealed that the Queen has an iPod, seen here in the background, in her living room at her Balmoral retreat

Royal expert Ingrid Seward says one of the Queen's favourite songs is California Girls by the Beach Boys, pictured Credit: Michael Ochs Archives - Getty

Ingrid also added that the monarch also has a wide range of listening tastes from military music to Elton John, but doubts she listens to her iPod much.

She added: "Whether or not she has much time to listen to music on her iPod I am not sure, but I rather doubt it."

But the Queen's favourite song isn't the only thing that has been revealed about the 91-year-old monarch.

Last month we revealed the very unusual nickname Prince Philip gives his wife, and it appears he has taken inspiration from his vegetable patch.

While we also told you how Her Majesty never goes anywhere without her mobile phone and even loves Facebook.