The F# Major chord is a triad consisting of three notes: F#, A#, and C#. It is built on the root note F# and is classified as a major chord due to its specific interval structure, which includes a major third and a perfect fifth. In music, the F# Major chord is commonly used in various genres, including pop, rock, and classical. It can be played on different instruments, such as the piano or guitar, and often serves as a foundational harmony in compositions, providing a bright and uplifting sound.