The Suzuki pieces we hear on the official recordings are played by professional musicians at performance level. This means that, for players who are learning a new piece, the piece are much faster than they are able to play at first.
Here are a couple of apps that can slow down recordings to help us listen:
iOS: Anytune – https://itunes.apple.com/us/app/anytune-slow-down-music-bpm/id415365180?mt=8
Android: Audiopo – https://play.google.com/store/apps/details?id=jp.ne.sakura.ccice.audipo&hl=en
Try them out!