The Penal Code

Referring to the Penal Code (Cap. 224, Rev. Ed. Sing. 1985), s. 294:

Obscene songs.
294. Whoever, to the annoyance of others —

(a) does any obscene act in any public place; or

(b) sings, recites or utters any obscene song, ballad or words in or near any public place,

shall be punished with imprisonment for a term which may extend to 3 months, or with fine, or with both.

I've sung some obscene ballads in my time, I believe. What a tragedy.