Is the tango in a major or minor key?

Tango music can be found in both major and minor keys, but it is predominantly characterized by the use of minor keys. The minor tonality often conveys a sense of passion and melancholy, which is central to the emotional expression of the dance. However, major keys can also be used to create lighter, more upbeat variations. Ultimately, the choice of key contributes to the specific mood and style of the tango piece.