Also here is a quick look at what I've posted and what the response was despite the fact that this did change the time temporarily.
/mnt/unionfs/abooks$ find . -exec touch {} \;
touch: failed to close './**': Operation not permitted
touch: failed to close './Andy Weir/2000 - Artemis/Artemis (Unabridged) - 001.mp3': Operation not permitted
touch: failed to close './Andy Weir/2000 - Artemis/Artemis (Unabridged) - 002.mp3': Operation not permitted
touch: failed to close './Andy Weir/2000 - Artemis/Artemis (Unabridged) - 003.mp3': Operation not permitted
touch: failed to close './Andy Weir/2000 - Artemis/Artemis (Unabridged) - 004.mp3': Operation not permitted