Early this morning from 1910 UTC (mid night 0040 IST), while tuning across the MW band I heard Hindi songs continuously on 1458 kHz without any announcements for many hours.
Two AIR stations are using this freq viz Bhagalpur & Barmer. Today morning when I contacted AIR Bhagalpur they informed it was not their station. However AIR Barmer in Rajasthan confirmed that it was their station testing new 20 kW transmitter !
(Jose Jacob, VU2JOS, National Institute of Amateur Radio, Hyderabad)