The late George Jellinek—a perceptive musicologist and commentator not inclined to exaggerate—identified as Rodrigo’s concertos revolutionary, and asserted that their freshness resulted in the composer’s utilization of the 2nd interval. Even listeners without musical background are more likely to have heard about other harmonic intervals—thirds, fourths, fifths, etc—but seconds, http://rowankwvgk.blog2learn.com/25511816/the-5-second-trick-for-rodrigo-adagio