The music is usually linked to the Portuguese guitar and the Portuguese word saudade.
这种音乐通常和葡萄牙吉他和葡萄牙语言saudade联系在一起的。
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For example, the Portuguese word "saudade," which means something like a bittersweet nostalgia for a person or thing that has passed, is a word that doesn't exist in English.
Although without an accurate equivalent in English, saudade is describable as a common human feeling; it occurs when one is in love with someone or something yet apart from him, her, or it.