https://www.musical-u.com/learn/tension-and-release-part-2-scales-meet-chord-progressions/
Melody moves through its harmonic surroundings creating varying degrees of tension and release. As we train our ears to perceive tension and release, we gain deeper appreciation as we listen to music and greater mastery in composing, improvising, and playing by ear. https://www.musical-u.com/learn/tension-and-release-part-2-scales-meet-chord-progressions/