Professional dancer and now 'Dancing With The Stars' judge Derek Hough zoomed into the show today to break down the recently revealed cast of the new season of DWTS. That new season premieres on September 20th on ABC with Derek in the judges chair for another season. Plus Derek has a brand new Las Vegas residency that debuts later this month! An incredible dance filled show that you have to check out. Listen back to the full interview below and be sure to catch Derek on 'Dancing With The Stars' premiering September 20th!