Bach in the Subways featuring thousands of musicians worldwide begins at 1:30 p.m. March 24 in the old Carnegie Library courtyard, 300 Main St. The hope is to cultivate new generations of listeners and players via the music of Johann Sebastian Bach. For the fifth time in as many years, Alina’s Music Studio students, young and older ones — “Who are very passionate about their instruments and music they play,” she said in a written statement.