About Declan Galbraith
Declan John Galbraith (born 19 December 1991) is a British singer and songwriter. He became known in 2002 with the release of the single "Tell Me Why", which peaked at number 29 on the UK Singles Chart and helped break the Guinness World Record for the world’s largest simultaneous sing-along. Galbraith later found success in Europe and China, where his music was used in schools to support English language learning. Galbraith’s first performance occurred at his grandmother’s 60th birthday party, where he sang the traditional song, "Tell Me Ma". Galbraith subsequently signed a three-album deal with EMI Records, reportedly worth £1 million.
Biography source: Wikipedia. The profile adds birthday-specific historical context from the Celebs Birthday Today editorial database.