His songs are better-known than his name: Albert Hammond is one of the most successful composers in the history of pop music, and he’s also had considerable success as a singer. He sang his own top hits like “It Never Rains in Southern California” and “The Free Electric Band” while also writing world chart-toppers for others such as “Nothing’s Gonna Stop Us Now” and “One Moment In Time.” Many of Hammond’s songs have become earworms for all eternity. On May 18 the London-born singer-songwriter turns 80 – and after a long break, he is writing songs again. Meeting dpa for an interview in London, …