It’s taken David McAlmont over 15 years to find the right outlet for his remarkable voice and songs but, fingers crossed, it looks as if he's finally done it. In prospect, McAlmont's collaboration with Michael Nyman and his band, which received its first public airing last night at the Union Chapel, seems rather random. What, you might well ask, has a man with the vocal chops of a soul legend such as Curtis Mayfield got to say to a minimalist composer and soundtrack specialist with a gift for classical pastiche? Seldom have the musical codes of the street and the salon been more obliquely positioned.