During his career as a singer, he was associated with the works of 20th-century composers, particularly Benjamin Britten, and Peter Maxwell Davies.
He created the title role in Davies's opera The Martyrdom of St Magnus and Sandy in his The Lighthouse and performed in the world premieres of Davies's Into the Labyrinth, cantata for tenor and chamber orchestra, and The Jacobite Rising.
Mackie was born in Aberdeen and studied at the Royal Scottish Academy of Music and Drama.
Mackie made his professional debut in London when he sang as a soloist with English Chamber Orchestra under Raymond Leppard From 1983 he taught singing at the Royal College of Music and in 1993 became head of the Department of Vocal Studies there.
[1] Mackie was made a Commander of the Most Excellent Order of the British Empire in the 1996 New Year Honours for his services to music[2]