The Distinctive Baritone said: "Hugh Panaro as Sweeney Todd? He's a tenor - like, a real tenor, with a very bright, boyish sound. Even if he can hit the low notes, this is very unconventional casting. I'm curious to see how he does."
He's actually a baritenor, although his voice does without a doubt lean more toward the tenor side. He's got a good lower range though. Certainly not a typical Sweeney range, but it should work pretty well for the role.