I'm a librarian who loves anime, manga, and reading a wide variety of genres.
Cover of the Beatles' "Let It Be"
Vocaloid: Sweet ANN
Tuner: Alberto Fernandez Moldes (Blancanegra) (ETA: or Jose Ma Lastras, aka Giuseppe or MasterVocaloid. I think Moldes just did the guitar portion?)
Work is kicking my butt, so I'm listening to more singing software.
Most of the time, the Vocaloid/Utauloid songs I listen to are in Japanese. I only know a few words here and there, so I'm not the best judge of how smooth and understandable the songs are. At one point, I specifically went hunting for English Vocaloid/Utauloid songs and came across this one. Sweet ANN is not my favorite Vocaloid, but I think the tuner did a pretty good job with this song, especially considering that he isn't a native speaker of English. The most garbled words are "answer" (sounds like "angel" to me) and "cloudy."