"Major Key" is a term popularized by the music producer and DJ DJ Khaled. It refers to important principles or insights that can lead to success in various aspects of life, including personal development and career growth. The phrase emphasizes the significance of understanding and applying these key concepts to achieve one's goals. In the context of DJ Khaled's work, "Major Key" is also the title of his 2016 album, which features collaborations with various artists. The album includes themes of motivation and perseverance, reflecting Khaled's philosophy of hard work and determination in the pursuit of success.