Is the song 'someone like you' major or minor?

The song "Someone like You" by Adele is in the key of A Major, even though it is a sad song. If you want to know the key of a song, search for the song title, artist, and "Sheet Music". If you are referring to the song "Someone you You" by Van Morrison, the key is B flat major.Please add details such as the artist to make your questions more clear.