Surely you can dream of joys gone by, or even the fond hopes that cheer us and die, without e'er a "Massa" &c to be heard (if you're sufficiently familiar with Foster's work, that is). Is it all right to whistle the tunes? I await your guidance.
Note that I'm not going so far as to suggest that a State broadcasting service should employ as a "signature tune" a melody the words of which could reasonably be seen as racist, anti-semitic, demeaning to women, &c &c &c. That's my objection to "Liliburlero", though I anticipate that this objection won't be quite as fashionable as similar ones.