Third year of Philadelphia Cathedral Festival on starting April 30 through May 4.   Cathedral Singers under the direction of Riyehee Hong gave a concert to close the Festvial on Sunday, May 4th at 4pm.  Tononi String Quartet and Philadelphia Boys Choir and Chorlale joined this celebration.  The program included Handel Organ concert in F Major Played by Tornoni String Quartet and Riyehee Hong organ solo, Hayden's Little Organ Mass followed by Windows, the world premier piece writtten for Riyehee Hong by Andrew Galuska, Echoes by Karen Christianso, the organ scholar of Philadelphia Cathedral. More information please visit webisite www.philadelphiacathedral.org.