I love that you can do so much with this app! You have access to your entire library of songs, which is great for those who are just starting out or want more variety in their practice sessions (since there's no limits!).
The interface isn't as intuitive compared to other apps like itunes when using an ipad but once one gets used to how everything works they adapt quickly!! It has helped me improve my breathing techniques by giving visual cues about what muscles should be working during certain exercises. This helps keep things interesting while practicing at home without having someone watch over them all day long :) For sure give these videos/apps another try if any issues arise first before going back through previous ones until something fits right into ya' self-practice routine ;) Try different tempos & speeds; maybe even doing intervals between each exercise session will help too? Also.