Loading collection data...
Collections are a way for you to organize kata so that you can create your own training routines. Every collection you create is public and automatically sharable with other warriors. After you have added a few kata to a collection you and others can train on the kata contained within the collection.
Get started now by creating a new collection.
songs
is an array. Andsongs[0]['playback']
orsongs[1]['playback']
should be strings. I just checked it again.The input argument is in seconds.
Are you sure you are getting an int in the songs array playbacks? Could you post your code here (mark it as spoiler)?