Chas & Dave. Mustn't Grumble. Chas \u0026amp; Dave. No ha es queixen.
... it yourself Mustn't grumble, mustn't grumble Mustn't grumble, don't worry 'bout nothin' my friend Mustn't grumble, 'cause all's well that's well in the end Mustn't grumble, grumble
...