As World Food Programme's Philippine ambassador, she shared the stage with Bill Clinton in 2008 to present the former US leader's foundation its commitment to feed more people in impoverish countries.
In 2008, KC Concepción released her first studio album on July 15, 2008 entitled "a.k.a Cassandra", on the Sony BMG Philippines label, which ranked number 1 based on total album sales in all Odyssey Record Bar branches nationwide. In fact, 1,102 copies of the album were sold in all Odyssey branches alone. KC Concepción made Philippine music history with her lead single "Imposible" during that year. KC has the most number of music downloads in the Philippines in the same year, which marked 1 million downloads online. KC Concepción thought that she would just perform her newest single, "Doo Be Doo", on the noontime TV show Wowowee on ABS-CBN Channel 2 on November 15, 2008. However, she was surprised when she was given a Platinum Record Award for her album "a.k.a. Cassandra".