Plunder’s Pixelcraft PE is a low-resolution (16x) texture pack that comes in two versions: one that comes with shaders, and one without shaders. The textures are kind of nice if you want your world to carry that medieval styled look. One other great thing is that it also includes a sounds pack which includes all the original Minecraft songs. The music will be loaded automatically once you have imported the texture pack.
All credit goes to LungNonZa and PlunderPixels
You can choose between the Shaders and non-Shaders. And no, you can’t install both. Here are some images to help you choose.