Matching Pairs Melody and HarmonyOnline version 1 ESO, bilingual, melody and harmony by Gustavo Porras Funes 1 Semitone 2 3 4 The melody that becomes the core of a musical piece 5 6 7 8 Interval 9 Melody 10 Theme Lowers the note by a half-step Key signature Sequence of sounds that express a musical idea Melody The shortest distance between two sounds Raises a note by a half-step Harmony Scale Distance between two sounds