This "lloras cantando" is tricky because it means "you cry when you're singing" while "you are singing and crying" are not obligatorily simultaneous, they can alternate.

Something was puzzling me because in Occitan "aura" is the cold Winter wind. So I checked and...
"Aura": "1. f. Viento suave y apacible. U. m. en leng. poét." from the Diccionario de la Real Academia (link to the "aura" page, there are different meanings). So it's not misty it's windy, which makes more sense in this context. Would "zephyrs" fit?