TY  - SER
AU  -  Wagner, Richard, 
TI  -  Siegfried and The Twilight of the Gods : :  
AV  - ML 
PY  - 2015///
PB  -  Project Gutenberg, 
KW  -  Operas -- Librettos
N1  -  Public domain in the USA;  Text
UR  -  http://www.gutenberg.org/ebooks/49507
ER  -