Alka is the daughter of keyboard player Ajith and Sajitha. She had a wonderful start of her career at the age of 2.5years when she sang the hindi song "Soldier.." in a ceremony to commemmorate kargil war soldiers. She, with more than 6000 songs across 11 languages has entered into Limca book of world records. She has released 6 cassettes of her own. She was conferred awards such as Unesco gold medal, Rotary international award. She won 2010 airtel super singer junior.