There is a wonderful sense of intimacy and yet vast space within this piece. It’s a contradiction which goes to the heart of the music. The solo should be expansive, not simply loud. If there is no sense of rhythmic intent (despite the South American origins of the music) or the harmony is bland and indistinct or the chorus sounds bored (probably because it has been shoved into the background), you might well dismiss this as not worth your attention. We think that would be a great shame.