Had a classical guitar teacher who taught that music is the creation and release of tension, and used to couplets to demonstrate. He showed the resolution from a Bdom7 to an E chord by playing the D#-A couplet followed by the E-G# couplet on the third and fourth strings. The first, dissonant couplet sounded weird, the second harmonic couplet sounded right, but the pleasure was in the transition. This view informed all his subsequent teachings whether the topic was chord structure, or the use of dynamic changes of tempo and loudness. The point was always to create and then release tension.