The term 'Melodious Sound' can be broken down into two crossword solutions: MUSIC (5 letters) and TUNE (4 letters). MUSIC is a form of art that uses sound to create a composition, often with instruments or voices. It is typically divided into genres such as classical, jazz, and pop. A TUNE is a melody, or a series of notes that make up a song. It is usually composed of a combination of notes and chords, and is often used to create a catchy or memorable sound.