Videos less than 30 secs would be alright.
You will have access to the audio always, as you can download it once purchased. You however, cannot sell it or use it to teach others, or for any commercial purpose.
You also cannot upload the performance and audio on youtube/facebook or any other social media platform.
A usage of 30 secs is acceptable and you are free to share your progress on social media, while giving credit to the requisite parties.
Thank you for asking to clarify
Glad you are progressing well