There is more than one artist using the name Anvil:
These are videos from concerts where Anvil played, so they may be of other bands that played the concert as well.
Saxon / Anvil Nov 5, 2009 Middlesbrough, England, United Kingdom Added by Daniel Dixon
Loud Park 2009 Oct 17 - 18, 2009 Tokyo, Tokyo, Japan Added by Fantomos
Anvil / The Answer / AC/DC Jul 31, 2009 East Rutherford, New Jersey, United States Added by Greg Fasolino