classes Drumming Classes Mondays MIT World Music Room (264 Mass. Ave, Cambridge, MA). $10. 6.00-7.30 (September-May) 6.30-8.00 (June-August) Saturdays MIT World Music Room (264 Mass. Ave, Cambridge, MA). $10. 12.00-1.30 Dancing Classes Thursdays Cambridge Dance Complex (310 Webster Ave., Cambridge, MA). $12. 6.30-8.00