As children huddled together for warmth in a crowded lifeboat, they were comforted by the repeated playing of a musical toy pig, used to block out the cries of the dying in the water around them. But in the century since the tragedy, while the pig has survived, its song has been silenced, its mechanism broken. Now, though, experts at the National Maritime Museum have managed to fix the object and have made a recording of the song, in a bid to get help from the public to help identify it.