This sound is from NFL Football Fight Songs

The National Football Conference (NFC) is one of the two conferences of the National Football League (NFL), the highest professional level of American football in the United States. This conference and its counterpart the American Football Conference (AFC), currently contain 16 teams organized into 4 divisions. Both conferences were created as part of the 1970 merger with the rival American Football League (AFL), with all ten of the former AFL teams and three NFL teams forming the AFC while the remaining thirteen NFL clubs formed the NFC.

In U.S. and Canadian sports, a fight song is a song associated with a team. In both professional and amateur sports, fight songs are a popular way for fans to cheer for their team, and are also laden with history; in singing a fight song, fans feel part of a large, time-honored tradition. Also known as team anthems, team songs or games songs in other countries.