The 104 members of the upstart Melrose Philharmonic Orchestra of Melrose, MA stood outside Jordan Hall Sunday and passed out demo CDs to the crowd exiting a Boston Philharmonic performance of Prokofiev's Symphony No. 6 In E-Flat Minor. 'Hey, you like orchestral?' said third cellist Paul Gleiberman as he thrust copies of the recording at visibly bemused concertgoers. 'We've been meeting in my conductor friend's four-car garage every Tuesday, and we're getting pretty tight. There's some Mahler, a Mozart, our choir buds helped us out with the Morten Lauridsenwe go all over the place. You should check it out. It's good.' The orchestra was told to move across the street by Sanders Hall management, who said that it was blocking several fire exits. 