The Colleges Woodwind and String Ensembles will present their spring concert at 8 p.m. on Tuesday, May 4, St. John's Chapel. The Woodwind Ensemble, directed by John Oberbrunner, will perform works by Johann Quantz, Jean-Baptiste Loeillet, Johann Sebastian Bach, and others. The String Ensemble, directed by Andrew Zaplatynsky, will perform works by George Phillip Telemann and Antonio Vivaldi. The concert is free and open to the public.