The Limon Dance Foundation, in partnership with Bryant Park, is offering Free classes in basic modern dance, taught by members of the Limon Dance Company.   Sept. 12 class taught by Eric Parra with musician Greg Loewer; Sept. 19 taught by Lauren Twomley with musician Ryan Wolfe. Students of all ages are welcome, wearing exercise or comfortable clothes and shoes, or bare feet.  Masks are mandatory this year.  Pre-registration is not mandatory, but is advised: www.limon.org