Second City shows the way to really fly

'Doors Open on the Right'

highly recommended

When: Open run

Where: Second City, 1616 N. Wells

Tickets: $17-$19

Call: (312) 337-3992

The composition of Second City troupes has fluctuated over theyears, but it's unlikely there's ever been an ensemble made up ofthree men, three women and one disembodied voice.

The first sounds you hear in "Doors Open on the Right," the newrevue on the Wells Street mainstage, are the chimes that every Lrider knows as the preamble to a recorded announcement. Then upcomes that familiar intonation, the very same authoritative yetavuncular voice that signals the stops on the CTA, only this timehe's telling …