Daijiworld Media Network - Mangaluru Mangaluru, Nov 7: The historic World Konkani Music Mega Convention, organized by Mandd Sobhann, achieved a landmark milestone on Saturday November 7, by successfully completing 110 consecutive hours of non-stop singing at the Town Hall, Mangaluru. The ambitious attempt for the Gui..... The ambitious attempt for the Guinness World Records title for the Longest Singing Marathon (Multiple Singers) has now crossed the 110-hour mark.