The studio had a wooden floor that Marc used to create an interesting sound effect by pounding on the floor with his hands as if the floor was a drum.
(The studio; had; a wooden floor that Marc used to create an interesting sound effect by pounding on the floor with his hands) (Marc; to create; an interesting sound effect) (the floor; was; a drum)
The studio Marc the floor
had to create was
a wooden floor that Marc used to create an interesting sound effect by pounding on the floor with his hands
an interesting sound effect
a drum