Check it out: Canada's most amazing twin indie act - Tegan and Sara. You gotta love how they both do guitar and vocals for their songs. It really works out and their voices blend so well together (which makes sense since they're twins). "Walking With A Ghost" is one of the catchiest songs out there that repeats a few lines over and over. The only other song that I can think of that accomplishes the same thing is Hot Hot Heat's "No, Not Now". Tegan and Sara were recently nominated for a Juno under "Alternative Album of the Year" - this puts them under the same ranks as Metric, Hot Hot Heat, and Broken Social Scene.