CHICAGO — Each season, Chicago Tap Theatre (CTT) runs a fairly formulaic series of performances. There’s the holiday tap jam Tidings of Tap, a one-nighter at the Athenaeum, and a full-length narrative, usually staring the company’s Artistic Director and Business Manager, husband and wife team Mark Yonally and Jennifer Pfaff Yonally. While the content of each “tap ballet” is different…