The legendary musical-instruments emporium is taking nearly 30,000 square feet of modern retail space at SL Green’s 333 W. 34th St., The Post has learned — an office building once owned by Citibank th. The global musical instruments market is segmented on the basis of region, applications, types, and end-use. On the basis of region, the global musical instruments market is segmented on the basis of region into North America,…