I saw the Harvard Din & Tonics, an undergrad a cappella group, perform tonight on campus for their 25th anniversary. They were very, very good. They made my law school group sound like... well... law students. But I hear they practice 6 hours a day, and we practice... well... 6 hours a month, lately. So they ought to sound better than us. And they sure do. Basically flawless performances; some really great voices.