Coldplay star Chris Martin believes Rihanna is the "Frank Sinatra" of the current generation.

The musician told The Guardian that the singer's vocal talents have a golden touch.

The Barbados star has previously worked with Coldplay on the band's 2011 song 'Princess of China'.

Martin said: "She is the Frank Sinatra of our generation. She can turn anything into gold with that voice. Here’s the thing: if you speak to a good singing teacher about great opera singers, they will talk about consistency of tone.

"It’s like a beautifully squeezed tube of toothpaste. When you think of Rihanna’s voice you think of this whole, rich thing, solid like a tree trunk, and Drake is pretty similar.

"But Rihanna’s voice is just delicious for your ear. Sinatra had the same thing; anything he sang sounded pleasing to most people."

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Listen to Rihanna's 'beautifully squeezed tube of toothpaste' voice below: