What is the song played when iron man first puts on and test flies mark 2 suit in 1?

The song playing when Iron Man first puts on and test flies the Mark II suit in Iron Man (2008) is "Iron Man" by Black Sabbath.

This iconic track is often associated with the film and the character of Iron Man, and it perfectly captures the feeling of power and exhilaration that Tony Stark experiences as he takes to the skies for the first time in his new suit.