Charming, with a lovely background. I appreciate that the set of sentences to type is different each time. I also really like the karaoke-style indicator that lets you know where you are while typing.
The time cutoff felt a bit arbitrary, and I was always surprised when the game abruptly ended. Instead, I felt like the player should have a certain number of lives, which are reduced each time an error is made, or something in that vein.