solas Solas play Vital Mental Medicine / The Pullet

With his ship the Endurance being crushed by pack ice and sinking fast, Antarctic explorer Sir Ernest Shackleton ordered his men over the side, telling them to take only the barest of personal possessions, a limit of no more than two pounds each.
The one exception he made was for a five-string Windsor zither-banjo belonging to the expedition's meteorologist, a jaunty young man named Leonard Hussey. Although his repertoire was limited, Hussey had been keeping the party entertained through the long, dark, polar night, and Shackleton, keenly aware of the effects of stress and isolation on morale, wanted him to keep the tunes coming.
"It's vital mental medicine," Shackleton said of the music, "and we shall need it." And so Hussey brought along his banjo, all 12 pounds of it, and over the next harrowing months, he helped sustain the party's spirits with weekly concerts and singalongs. [National Geographic]

Andy Irvine is a great admirer of the Antarctic explorers. As Solas played Vital Mental Medicine, lights made patterns on the roof of the marquee. Look, I said, the aurora borealis! Don't you mean the aurora australis? said Andy.