The Remainders was founded by Kathi Kamen Goldmark in 1992.  Kathi was then a musician whose day job was in book publicity.  Through this, she met many prolific authors.  One day while driving one of the authors around, she came upon the idea of making a band of them. It stuck.  The Remainders' first performance was in 1992 at the American Booksellers Association convention in Anaheim, California . A review of the concert in The Washington Post referred to it as "the most heavily promoted musical debut since The Monkees ." 
But singing isn't only about harmonizing pitch like that. It has two other dimensions. The first one is rhythm. It's thrilling when you get the rhythm of something right and you all do a complicated rhythm together: "Oh, when them cotton balls get a-rotten, you can't pick very much cotton." So when 16 or 20 people get that dead right together at a fast tempo that's very impressive. But the other thing that you have to harmonize besides pitch and rhythm is tone. To be able to hit exactly the same vowel sound at a number of different pitches seems unsurprising in concept, but is beautiful when it happens.