Ow and why is the wall of sound production technique important for the music industry?

I need someone capable to writte an original essay demanding some research with +/3500 words about The Wall of Sound production technique created by Phil Spector. You will find all the assignment criteria and requirements on the pdf file attached.
Include at least one reference per paragraph to show which sources you have utilised for your discussion. As such, any ideas, quotes and phrases from secondary insertion of a footnote after the quote/idea/phrase appearing at the bottom of your page. Your word processor should include an Insert footnotefeature to enable this. The following information must be included in footnotes with identical formatting:
For books/magazines and journals: Authors Name, Date and Page number.
Note that complete details of the sources are provided in the main bibliography and therefore do not need to be fully referenced in the footnotes.