John Arden "Jay" Ferguson (born May 10, 1947) is an American rock and pop musician known for his work with the bands Spirit and Jo Jo Gunne, and his 1978 solo hit "Thunder Island". His later career has been as a composer of music for television programs and films, most notably the theme song for the American version of The Office on NBC. == Childhood and early musical career == Ferguson was born on May 10, 1947, in Burbank in... [more on Wikipedia]