“我需要一种[电子邮件类型]来解决我的[理想客户角色]的痛点和需求，并向他们展示我的[产品/服务]如何成为他们一直在寻找的解决方案。”[22] Musicologist Adam Harper identifies the difference as "phonographic" and "non-phonographic imperfections". He defines the previous as "elements of a recording