How about this: one way of adding interest in music is to add the nuance of changing which instrument plays the main theme once it comes back, think of scar's of time where the violin and piccolo flute switch off. in their respective high ranges, they sound pretty similar, a lot of people may not even pick up on it, but it's a little something that gives the piece depth since the melody itself isn't varied too much. When you think nuance, think of a subtle change to something that, overall keeps it the same in broad strokes, but perhaps changes the shade down or up by a single RGB point. Also, in footy, you might see a guy make a very similar goal twice, as in the path the team took to get the ball to the goal was pretty much the same....but perhaps his teammate fooled the opposition using two different techniques to get the ball to him. This nuance of using two different techniques in the same play is representative of proper usage of the word imo, rather than just saying 'the subtle nuances of blah blah'.
