Bugs' final line, "I sure hope Petrillo doesn't hear about this," refers to James C. Petrillo, then president of the American Federation of Musicians, and his disapproval of recorded music.
When Bugs says, "They say music calms the savage beast" he is misquoting. The line is from the play "The Mourning Bride", Act i. Sc. 1., written by William Congreve in 1697. The correct form of the quote is: "Music hath charms to soothe the savage breast, to soften rocks, or bend a knotted oak." As originally written, it is "Musick has Charms to sooth a savage Breast, To soften Rocks, or bend a knotted Oak. I've read, that things inanimate have mov'd, And, as with living Souls, have been form'd by Magick Numbers and persuasive Sound." The same play is the source for another often-misquoted line, "Heaven has no rage like love to hatred turned, nor hell a fury like a woman scorned." (Act iii. Sc. 8.).