The singer of the song 'Skyfall' is ADELE, a five-time Grammy Award-winning English singer and songwriter. She has released three studio albums, 19, 21, and 25, all of which have been critically acclaimed and commercially successful. ADELE is known for her soulful voice and her ability to convey emotion through her music. She has sold over 100 million records worldwide, making her one of the best-selling music artists of all time.