Passage: The show usually opens with the theme song, "In the Street", written by Alex Chilton and Chris Bell of the band Big Star. The original version of the song appeared on Big Star's 1972 debut album # 1 Record. In 2000, Chilton confirmed that he was paid $70 in royalties each time the show aired, an amount he thought ironic, given the show's title.

Question: Based on this passage, who wrote the theme song for that 70's show?
Steam of consciousness below:

The relevant information is: The show usually opens with the theme song, "In the Street", written by Alex Chilton and Chris Bell of the band Big Star.
So, the answer is Alex Chilton and Chris Bell of the band Big Star.