Dr. D.R. Upadhyay (born on December 16, 1962) of Chabahil, Kathmandu, Nepal, unveiled his self-written songbook titled “Alaukik,” measuring three feet in length and two feet in width and acclaimed as the world’s largest songbook. This remarkable achievement was announced during a press conference on December 28, 2023, in Chabahil, Kathmandu, Nepal.