Many athletes use music to get ready for training.
I recall having my own PSYCH UP playlist, back in the day.
Some possible benefits:
Dissociation
Arousal Regulation
Synchronization
Acquisition of Motor Skills
Attainment of Flow
Taking that one step further, what about training acrobatic sport in headphones?
I’ve never tried it with gymnasts.
One option for wireless headphones is Decibullz.
Gymnastics Coaching.com 