According to Sergeant Major Supro.
This thundering version of Mississippi Queen, Live in the studio at WITF Pennsylvania, USA shows the band at their peak power. They are sufficiently stimulated for the experience and giving it their all (except the keyboard player, wtf). This version is much better than the album version and the live version at NY Pop later in 1970, and is undoubtedly the best version of the song anywhere. This is the Holy Grail of MOUNTAIN relics.