I took some video of Stella listening to her song. I know it doesn't seem like she has a big reaction, but she is only 11 days old:) And actually the way she looks toward the computer and her eyes widen and she vocalizes at the end all mean she is interested. I played it again after this and it put her to sleep:) She loves it.

Sorry for the terrible camera work at the beginning. I had to hold the camera and press play with the same hand:)

Also I thought this may be useful as raw footage of a baby for anyone who needs it.