centenary of its consecration in 1997, the cathedral was closed throughout 1994 to be upgraded. Nothing was added to the main building. Rather, it underwent significant conservation work, with funds contributed by the federal and Victorian governments, corporate and philanthropic donors and the community of Melbourne. The cathedral's stained glass windows had buckled and cracked and required a full year to restore to their original state. Teams of stonemasons and stained-glass craftsmen used "lime mortars and materials long-forgotten by the building trade — like medieval times". The 1992–97 restoration works were undertaken under the guidance of Falkinger Andronas Architects and Heritage Consultants. The works were awarded the Royal Australian Institute of Architects (Victorian Chapter) John George Knight Award for Heritage Architecture 1996. One of the gargoyles restored by the masonry team was modelled on the then-Premier of Victoria, Jeff Kennett. Music Cathedral choir There has been music at St Patrick's since 1858, but the present cathedral choir was founded in 1939 when the Vienna Mozart Boys Choir found itself stranded in Australia at the outbreak of war. The National Museum of Australia holds a collection of the choir's memorabilia from this period. St Patrick's choir has between 50 and 60 members who are all students of St Kevin's College in Toorak, through a scholarship program from the archdiocese. The choir has made commercial recordings in the past, mainly from the 1950s to 1990s. Selected recording before the 1980s have been deposited with the National Film and Sound Archive (Screensound Australia). Cathedral singers Formed in May 1996, the St Patrick's Cathedral Singers supplement the musical resources of the cathedral. The choir has been directed since 2015 by Mr Christopher Mason. The Singers sing weekly at the Sunday 6:30pm Mass. Entrance is by audition and some scholarships are available to eligible students. Pipe organs The cathedral's original pipe organ was built in the late 1870s by Robert Mackenzie and completed in 1880 by George Fincham. The current installation built by George Fincham & Sons, Melbourne in 1962–64 and incorporates a substantial part of the original. Installed in the west gallery of the cathedral, it comprises 81 speaking stops spread over four manuals and pedals. Some of the stops can be dated to 1880 or 1896, when the instrument was enlarged. The organ was refurbished in 1996–97 for the centenary of the cathedral. In addition to serving the liturgical needs of the cathedral,