In the piece, she is quoted as saying:
"I just loved the whole thing of the series--the intensity, the writing, the look and feel...And I kind of likened the points where a character would go off on a long rant in the same way that a soloist will make an extended statement like that rather than merely a segway between movements in the song."
A "segway," of course, is an over-hyped two-wheeled personal conveyance, and although it does move you around, it won't carry you between movements in a song. For that you need the more conceptual, but less expensive, "segue."