Grand Funk Railroad preforming their hit song We’re An American Band, live in 1974 (per the YouTube user details).
The song was the title track to their album which was released in July, 1973 and went on to reach the number 2 spot on the charts as well as becoming a Platinum selling album for the band.
The single became the band’s first number one single shortly after it’s release. The song was written by the band’s Drummer, Don Brewer, who also is the lead vocalist for the song. Check it out below: