Extending the unanswered lyric clues

[chickenfeet]

3. "Wait! Don't touch her yet! She still belongs to us"

5. "Let us avenge both Nature and the wrathful gods!
Let us devise torments! He killed his mother"

Comments

[glitterboy1.livejournal.com]

3. Oh, bother! Das Rheingold

Must think about 5.

[chickenfeet2003.livejournal.com]

It is Rheingold.