Open mic at Pegasus with the Green Muse The Green Muse Open Mic returns to Pegasus Coffee House from 8 to 10 p.m. Tuesday nights (except the first Tuesday of the month). September 22, 2014 11:54 am The Green Muse Open Mic returns to Pegasus Coffee House from 8 to 10 p.m. Tuesday nights (except the first Tuesday of the month). The open mic is open to musicians, comics, storytellers, poets and anybody who wants to utilize the mic.