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The sheet music belonging to Wallace Hartley.

The violin played by the bandmaster on the Titanic as the ship was sinking is finally being auctioned for an estimated £400,000.

The wooden instrument has been proven to be the one used by Wallace Hartley as his band famously played on to help keep the passengers calm during the disaster.

Its existence and survival only emerged in 2006 when the son of an amateur violinist who was gifted it by her music teacher in the early 1940s contacted an auctioneers.