The term 'Pleasant Sound' can be described by two crossword solutions: MUSIC (5 letters) and LILT (4 letters). MUSIC is a form of art that uses sound organized in time to express emotion, create atmosphere, and tell stories. It is often used to accompany other forms of art, such as dance or theatre. LILT is a type of musical phrase characterized by a light, cheerful rhythm. It is often used to create a feeling of joy and happiness.