I think I agree with the majority here, that Flute suffered an insufferable put-down. But I know that if people sing "Old Lang Zyne" in my hearing I will strenuously endeavour to convince them that there is no such beast. The word "Syne" is not even exclusively Scottish, and the first consonant is unvoiced except by drunken and/or ignorant singers. I have no knowledge of whether any such prohibition of incorrectness could apply to any sound that the flute can make.