Aimee Mann is an American singer-songwriter. Mann began her career in the 1980s as the bassist and a vocalist for 'Til Tuesday. She released her debut solo album, Whatever, in 1993, and has released several albums since. (Wikipedia)

Jonathan Coulton, often called "JoCo" by fans, is an American singer-songwriter, known for his songs about geek culture and his use of the Internet to draw fans. Among his most popular songs are "Code Monkey", "Re: Your Brains", "Still Alive" and "Want You Gone". (Wikipedia)