Song: Should I Stay Or Should I Go, Magnificent Seven Film: Iron Man 2 The Clash formed in 1976 and rode the original wave of punk in Britain. Their music incorporated elements of reggae, ska, dub, funk and rockabilly, giving them a sound that stood them apart from the crowd and a sound that still sounds fresh today, fresh enough to make it into Iron Man 2. Their UK number one single Should I Stay Or Should I Go is playing when Tony Stark starts up his workshop computers, and the Magnificent Seven is heard later in the same film when Tony and Happy are sparring.