David Guetta (born 7 November 1967 in Paris) is a French DJ. He began mixing his first vinyls at home at the age of 13, and organised parties in his basement at 15. Two years later, he was working as a DJ in a club called 'Broad', based in Paris. This was effectively where he launched his career. From 1988 to 1990, he mixed house music at Radio Nova. In 2005, his single "The World Is Mine", which contains a sample of Simple Minds "Someone Somewhere In Summertime", topped European dance charts. The vocals for most of his singles are performed by singer Chris Willis, except on "Baby When The Light" where they were done by Cozi Costi.
In 2008, he was elected as World DJ No. 5 and best house DJ by the British DJ Mag. "Baby When the Light" is a song from 2007 by the French DJ David Guetta. It first appeared on Guetta's Pop Life album and features vocals by singer Cozi Costi. The song was written by Guetta and singer-songwriter Cathy Dennis, whose previous hits include "Touch Me (All Night Long)" as well as co-writing numerous dance-pop songs such as Kylie Minogues "Can't Get You Out of My Head" and Britney Spears' "Toxic". The song was released in late.