Ingame footage of "Level 90 Elite Tauren Chieftain" (dinged to a normal name again at Blizzcon 2011) performing their old -but oh so famous- song "Power of the Horde" just outside Shattrath. An event only available for about a week, during BlizzCon 2007.Nowadays, L90ETC perform their famous song "Power of the Horde" in the World's End Tavern in Shattrath City every three hours on the hour, eight shows per day. Several minutes prior to their show, "Shattrath Saul" will yell that the Tauren Chieftains will be performing.In addition, every night at 8PM server time, The Tauren Chieftains perform a five minute concert in The Grim Guzzler inside Blackrock Depths. More info about L90ETC can be found at: http://www.wowpedia.org/Level_90_Elite_Tauren_Chieftain