The quote "Tax not so bad a voice to slander music any more than once" from William Shakespeare’s play "Much Ado About Nothing" suggests that one should not be quick to criticize or slander something that isn't truly deserving of bad remarks. Just as music can evoke different emotions and responses, so too can perspectives on various subjects. The speaker seems to advocate for a fairer, more thoughtful consideration of matters before passing judgment.

In this context, Shakespeare encourages an understanding of the complexity of experiences and opinions. Rather than hastily dismissing or attacking ideas, it is essential to appreciate their nuances. This notion resonates beyond the play and can apply to many areas of life, reminding us to approach criticism with caution and empathy.