i guess that's why they call it the blues

That phrase is famously from the song "The Thrill Is Gone," popularized by B.B. King, and it expresses the feeling of sadness and melancholy that the blues music genre often conveys. The line “I guess that's why they call it the blues” reflects the deep emotional weight and sorrow that blues music captures. It’s a poetic way of acknowledging that the music is named after the feeling it brings out—feeling blue, or sadness. Would you like to know more about the blues or that song?