The most treasured 'shehnai' of Bharat Ratna, Ustad Bismillah Khan, has gone missing from his room in the Hadaha Sarai locality of Varanasi, said his family. The maestro's youngest son, Nazim Hussain says someone within the family might have done that. The incident happened amid an ongoing dispute among Ustad's sons over who could make the most of Khan's legacy.