As a result of his success in the talent shows, the major recording companies soon heard about Galbraith and he was signed to his first recording contract in England. His first recording was "Walking in the Air", which was released on a special Christmas Hits album, also featuring songs by Westlife, Elton John and Elvis Presley. Among some of his most memorable performances have been the Queen's Jubilee at St Paul's Cathedral, when he sang "Amazing Grace" accompanied by the St. Paul's Choir and a performance in front of more than 22,000 people at an Elton John concert. His first self-titled album, "Declan", with Irish traditional songs as well as specially written material became a big success and charted in the UK and Ireland. Within the year of release, it had soon sold 200,000 copies in Germany.