Why does peter want the musicians to play "heart's ease" after he finds out that juliet is dead?

in my opinion, anyone should be allowed to marry as long as it's not going against any laws. though i kind of contradict myself because i know that in some states and countries, gay marriage isn't legal yet- hopefully you get my point.

queen elizabeth's purpose in the passage is;

d. to persuade the troops that she is a capable commander

"i have the heart and stomach of a king. i myself will be your general, judge, and rewarder."