Answer:

1. the feeling of having strong romantic feelings toward someone, only to find out that they do not feel the same way about us. Love that is not returned or rewarded. It is a one-sided experience that can leave us feeling pain, grief, and shame.
2. Happy; sad; angry; triumphant; confident; peaceful; etc.) Sing your song melody to a neutral syllable
3. Song structure is the arrangement of a song, and is a part of the songwriting process. It is typically sectional, which uses repeating forms in songs.
4. Music is an important popular form of entertainment that can also teach information, highlight problems, and even inspire people to change injustices in society. People who write songs can express messages that are important to them through stories, statements, and metaphors in their words and music.