Arlington’s Signature Theatre never misses an opportunity to fill an empty venue with a quality cabaret act, and this summer, the company lets its new tenants get in on the action. The No Rules Show continues its 10-night run tonight with the talented Joshua Morgan of No Rules Theater at the piano and some guests doing…well, there’s really no telling what the guests will do. The evenings are billed as “half Judy Garland, half Conan O’Brien,” which possibly means to expect some combination of revue and talk show. Thus far, Morgan’s guests have included NBC4 anchor Barbara Harrison, local storyteller Regie Cabico, and the a cappella band Euphonism. Tonight’s lineup features Rick Foucheux, recently seen in Round House Theatre’s production of Glengarry Glen Ross. He’ll be joined by comedian Sara Armour and Fringe performer Qurrat Kadwani. Exactly how well this quartet will mix things up at the piano remains to be seen, but the results will almost certainly be worth witnessing.

The performance begins at 8 p.m. at Signature Theatre, 4200 Campbell Ave., Arlington. $30. (336) 462-9182.