Title tag must be unique, two titles can not have same name. Each title should describe your site. Try to write such title tags that are relevant to the content on the page. All search engines compare title tag text and original text content on your page to check the relevancy.
Always place a keyword phrase at the start of the title tag so that it will be easily allowed by the search engines.
(1) XYZ SOUNDS – MUSIC SYSTEM
(2) MUSIC SYSTEM- XYZ SOUNDS
The above example can be easily understood by human however, if we talk about search engines then the other one MUSIC SYSTEM is more relevant as it comes at the beginning of the title. Therefore, try to place the website name at the end of your title tag.