Moss Portal

Half an hour into the future.
A young percussionist leading a successful band hits the creator's block and begins craving a famously lost beat that he thinks could help him.
A peculiar wealthy man that knows a way of retrieving the old piece approaches him.
The rich man tries convincing him to attempt a weird ritual.
After first being reluctant, he finally decides to give it a shot.
He soon discovers that the odd ceremony isn't what he expected.