Most people would agree that there’s nothing stronger, more durable and occasionally, even more volatile, than the bond between brothers. And when that bond includes the common goal of making music, the results often offer reason for an audience to sit up and take notice. There have been any number of examples in music’s modern era -- the Everly Brothers, the Beach Boys, the Kinks and Oasis to name but a few. Not that it’s easy or even agreeable, but there is common cause, and that’s generally enough to ensure there’s passion and purpose in its creation.