What is Romeo implying in these lines. The prince expressly hath forbid this banding in Verona streets

Romeo is implying that if Tybalt had obeyed the prince's orders, lives would be pulped, including his.

Explanation:

Romeo expresses how disobedience is evil and promotes pain and suffering. He reinforces that the prince had banned street fights, but Tybalt insisted on disobeying causing very negative results and that caused his own death, the death of Mercutio and exile of Romeu, who had to abandon his family and wife before being killed.

"the tune the he might never know again." this part build anticipation. dexter got extremely happy by the piano tune. he could see what he was living at that moment in his life throught this feeling. the reader might want to learn more about his happy life. in fact, he called it a state of   'ecstasy'. the fact that he had got in a mood of intense appreciation and that everything about him was extremely bright and glamorous might lead the reader to feel that this state of happiness may not last long. the two parts from the excerpt that exemplify the anticipation are: " the sound of the "; " it was a know again."