Learn how to say Blues correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word blues:
1 (often the blues) [treated as singular or plural] melancholic music of black American folk origin, typically in a twelve-bar sequence. It developed in the rural southern US towards the end of the 19th century, finding a wider audience in the 1940s, as blacks migrated to the cities. This urban blues gave rise to rhythm and blues and rock and roll:
blues has always had a strong following in Australia
a blues singer
[treated as singular] a piece of blues music:
a blues in C
2 (the blues) informal feelings of melancholy, sadness, or depression:
she’s got the blues
adjective (bluesier, bluesiest)
blues (sense 1).
mid 18th century (in blues (sense 2)): elliptically from blue devils ‘depression or delirium tremens’