Delhi-born playback singer Krishnakumar Kunnath, better known as simply KK, was among Bollywood’s most moving vocalists. The videos for his songs underline his uncommon emotive abilities, whether it’s a romantic travelogue for the tender “Khuda Jaane” from Bachna Ae Haseeno or a glamorous nightlife setting for the title song from Jhoom Barabar Jhoom.