 Prior to most duet performances, a video packet of clips of the couple preparing to perform the routine is shown; these packets are intended not only to demonstrate the couple's efforts to master the routine, but also to give glimpses of the personalities and personal histories of the dancers as well as insights from the choreographer as to the thematic, narrative, and artistic intentions of the piece.Following each duet performance, the week's panel of judges gives critical feedback, often emphasizing the two key areas of technique and performance value.Duets and their accompanying video packets and critiques typically take up the majority of an episode but are often supplemented by solos, group numbers, and occasionally guest dance or musical performances.