The secret behind Enya's "Orinoco Flow" is out! "Barton recorded a 30-piece ensemble of live strings, as well as live timpani, and most of the rest of the layers—even the 'pads'—are Enya’s voice. 'I do remember hiring in two extra 480Ls,' says Barton. 'So we had three reverb units, so that it wouldn’t all become just one mush. And because there were not really any drums, I made sure that the bottom end of the orchestra kind of filled in where, say, a kick drum would on a regular piece of music.'