Hey UG, I'm brenton and my sister and I have been writing lots of stuff together lately, this is one of our originals, check out the other videos too
The hiighlight of it was definitely the solo, really expressive, and the moment at which your guitar and caz's voice played the same progression was perfectly in place. The rest seemed a bit long to me, maybe you should have added some variation in it. To finish with, your sister really did a good work vocally.
You guys sound real good, really catchy. Love the guitar work in 'Sliver'