In his new play ( A ) loft Modulation , playwright James Jorsling brings to life 821 Sixth Avenue as it was during the 1950s and '60s, a time when musicians and others would be up until the wee hours. Jorsling takes us to a dilapidated five-floor walk-up loft in Manhattan's seedy flower district. It's there where the magic happens. Inspired by true events, ( A ) loft Modulation is directed by Christopher McElroen with this off-Broadway world premiere featuring a live jazz band led by saxophonist