Custom Tumblr layout

I am hoping to get a Tumblr layout for my band that is similar in functionality and navigability as this: [login to view URL] We are able to provide all images and text ourselves. A high degree of flexibility and control for us will be necessary (e.g. easily being able to change header image, video content, etc.) I do understand how to replace elements of code to meet this end. Essentially all I need is a structure through which to display this media.