Unique design and xhtml programming for a smaller website

We are a small production company that produces audio productions for companies. Now we want to refresh our website with a unique and cool design that stands out. The design should provide a sense of sound and creativity. It is important that the design is unique and especially designed for us. We have an existing logo that is very colorful and we want to blend in very well. We also need help to program design to validated XHTML with CSS. No control panel, wordpress or joomla needed - but only strict xhtml code. We will be adding texts themselves in the pages. We are open to any suggestions and ideas on design and will put extra emphasis on innovation. It is also important that the code for the website to be search engine friendly. We also want the psd-files with the design when the project is finished.