I have selected the Janis Nowlan Band to perform at my wedding and they are absolutely incredible! They are the perfect band for anyone who is looking for a reception that will keep your guests dancing and celebrating all night long. I went to see their Showcase last month and plan to see their next Showcase on April 7th at the Crowne Plaza Valley Forge right near King of Prussia. If you want to check them out here's their website!
They are also listed under Philadelphia Bands on the knot - which is where I found out about them!