LONDON: With a combined age of 273, and 50 years in the music industry, the Rolling Stones know every trick in the book about exciting fans.

Sir Mick Jagger has started fevered speculation that the Stones are preparing to release their first new music in seven years after he posted a picture on Twitter of himself holding a guitar in a French studio.

''Had fun in the Paris studio this week!'' he wrote.

Observers believe that the band are preparing new material to coincide with a world tour later this year to mark their golden jubilee.