In a lot of these clips there's this slapping noise in the background made by this plastic covering on the stage put up by the masons.
The altered track in the clip is a great artist I just came across on Red Parlor Records RedParlorRecords.com the artist is Jake Ziah
JakeZiah.com the song is Silver Seeds , The album is "These Days Do You No Justice"
The record is great .
Some of the going's on in the "tent";
replace with a re-do on iMovie.