Well, you're finally going to get your chance to own such a game next week, when Nintendo publishes--in Japan, harumph--a DSiWare title called Tsukatte Utau Saru Band (aka Make and Sing: Monkey Band).
The 800-point game was made in partnership with Muu Muu, the developer behind the similarly strange PS2 title from 2003, Kuma Uta (aka Bear Song), which starred a polar bear who, you guessed it, performed user-created songs using digitized/synthesized speech.
(Via andriasang.com)
