Hear Elan’s sax wail over the park’s meadows. This is some of the best jazz Boston has to offer! Great music outdoors in Franklin Park, Roxbury. Bring your lawn chair and a picnic supper. Tell all your friends and neighbors. Playhouse concerts will take place every Tuesday evening in July at 6pm through the 31st. Look for signs along the main park road directing you to Playhouse parking; take the…