The show was "NY Voices" PBS.org. Maybe there's an entire clip somewhere you can download. BTW, Benky and Frogs_: I've been on vacation for 2 wks, and tonight, at the theater, it was like watching a freaking entirely new show. Amsterdam has an incredible "new" middle part which is more stupendous than ever!! Stew and Daniel blew the entire audience away...yes, some stood DURING the number. Wow! And the last song, he starts off the first verse "a capella" (genius - amazing). To see the show again for any Scaryotypes will be a Revelation!
Thanks Teka21., and, to Curious, it's just this outrageous rythmn only riff, sorta like the rendition they did at the Obie's but even better. Trust me...pretty indescribable!