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I think and hope I just made your life a bit easier. I have started to put together some commonly used patterns that Spotify request that we use. For starters I have include Track Listings (both dark and light) and Tab Bar. You can see the live example and copy the HTML & CSS. Oh yeah, you can edit and preview on the same page. I have also included some helpful links and cleared up some questions on branding such as color and typography. Hope you enjoy.