The ideas of segue, set, and show would be important to the form, and it would be important to move beyond irony and beyond cover, variation, source, or paradox. Segue Dance music segue is frequently involved with beat matching. Vocal samples are generally isolated over instrumentals, or repeated as though they were a chorus or musical flourish. However, beat matching is didactic. In the play list form, if poems or lines of poetry are not used, beat matching does not necessarily apply.
Entries can relate by content, words, or opposition, for example.
Cover versions can be interesting to compare. They mix together well, and can be used not only as a segue but also to give a larger shape to a show. Identical chord progressions can be used. Similar or identical lyrics work as well as lyrics which comment on each other. A set can consist of units interrelated in a way that an entire show cannot be interrelated, but it is also a safety measure.