Bloomingdale School Of Music And InterSchool Orchestras Of NY Initiate Partnership Posted on 07/12/2018 by Harlem World Magazine — Leave a reply Two venerable music education nonprofits, the Bloomingdale School of Music (BSM) and InterSchool Orchestras of New York (ISO) have announced the launch of a partnership. Continue Reading → Sign-Up for Constant Contact e-mail marketing! Harlem World Magazine, relies on its readers for support. You can help us by supporting us today! Your contribution supports more local, Harlem coverage from Harlem World. Thank you!