blues

Blues is a feeling of melancholy or depression: I've got the blues today.

The blues is also a genre of American music originating among Black communities in the Deep South, characterized by expressive vocals, bent notes, and call-and-response patterns.

The musical and emotional senses intertwine—the music often expresses sorrow, longing, or hard times: She sang the blues like she'd lived every word.

Blues can modify other nouns: blues guitar, blues singer. (Capitalized Blues typically refers to sports teams.)