It was created by rubbing a gloved hand, a leather gloved hand, over the strings of a double bass, recording that sound and manipulating it, changing the speed.
There was a man with an accordion who seemed very sad and wistful as he played the slow waltz and a younger man playing the drums and an older man at the back with a double bass.
We chose those together because they're quite different characters, the flute to the double bass and the percussion, so they open up a lot of different possibilities in terms of the augmenting of those instruments.