Questions about sed Command Parameter-e

For more information about sed Command Parameter-e-general Linux technology-Linux technology and application, see the following. I would like to ask what is the role of-e in the Command sed-n-e '/music/' = quote.txt, why is the result marked in red below?
[Irwin @ IRWIN test] $ sed-n-e '/music/'P-E'/music/' = quote.txt
It was an evening of splendid music and company.
2

The quote.txt operation file is as follows:
[Irwin @ IRWIN test] $ cat quote.txt
The honeysuckle band played all night long for only $90.
It was an evening of splendid music and company.
Too bad the disco floor fell through at 23:10.
The local nurse Miss P. Neave was in attendance.