Analysis of information sources in references of the Wikipedia article "Pigs (Three Different Ones)" in English language version.
The drummer [Nick Mason], through his agent and friend, Ben Sutton, has answered me that the numbers shouted from Waters in 'Pigs' were to identify the bootlegs recordings (literally in the letter: 'The numbers in Pigs that you mentioned were ... to identify bootleg recordings!').
The drummer [Nick Mason], through his agent and friend, Ben Sutton, has answered me that the numbers shouted from Waters in 'Pigs' were to identify the bootlegs recordings (literally in the letter: 'The numbers in Pigs that you mentioned were ... to identify bootleg recordings!').