Player Animation

Hey guys!

I'm still new to animation and practicing it while working on this music app. The app will provide user with personalized music stream based on user's preferences and personality, and it also will allow user to choose from variety of predefined 'scenarios', which are essentially smart playlists that use different sensors of user's phone to deliver music in context. For instance, it will push more upbeat tracks when user is running and more calm music for when user is stationary or walking, and etc.

In this particular case I'm trying to show what happens when user starts playing one of these 'scenarios'. The thing I'm concerned about is that pulsation effect of green play button on the top. I'm looking for a way to show user that music is playing when he/she closes modal player. I like this pulsation effect, but still I'd like to get some feedback on it to see whether I'm moving in the right direction. The effect will pulsate with the rhythm of the track.

Make sure to check it out @2x and thanks for your time! =)