The Chorus Urbanus was founded within St George's Basilica in Victoria, Gozo in 1975. Its first official presentation was during the Midnight Mass of the same year. It was a  historical night for St George's Parish, since this was the first choir established within this same parish. On this occasion Rev Fr Joseph Gauci, the Choir's founder and first director, proudly presented to the congregation the Chorus Urbanus as St George's Parish's Official Choir. The congregation present during this Holy Night, welcomed this news with a warm applause since the absence of a parrochial choir had always been felt by every parishoner. 

Ever since its formation, the Chorus Urbanus was always a mixed choir. Despite the difficulties such an enterprise always finds in its first years, the Chorus Urbanus showed from the very beginning that it was going to succeed. Rev Fr Gauci found invaluable assistance in Joseph Bezzina, the organist of St George's Basilica. Bezzina was instrumental in the formation of the choir and in its preparations and rehearsals. He even composed various vocal pieces which were and are still being executed by the Choir. Bezzina's contribution was continuously and consistently felt throught the Choir's existence, up to his tragic death in 1998.

The number of services the choir gave in St George's Basilica is unquantifiable, both normal liturgical services as well as special and solemn ones. As the resident choir, it took part in all the Basilica's celebrations and functions, being pontificial and other solemn masses, primary and secondary feasts as well as other commemorations and similar occasions which were organised in the Basilica. The Choir is also remembered for its concerts of classical and baroque sacred music it gave in St George's Basilica with the participation of Gozitan, Maltese as well as foreign soloists. 

With the installation of Mgr Giuseppi Farrugia as archpriest of St George's Basilica, the Choir was not asked anymore to give his service in the Basilica, a service it has given uninterruptidly and voluntarily ever since its formation in 1975. This was done so that the Chorus Urbanus' legitimate place as the resident choir of the Basilica will be taken by the other choir in St George's Basilica, the Laudate Pueri, a choir originally formed in 1976 as a children's choir by Mgr Farrugia himself when he was still a seminarian. Up to this present day, the Chorus Urbanus is still being excluded from all activities in the Basilica, including private functions such as weddings and funerals. The sincere hope of each and every parishioner is that the Chorus Urbanus will once again find its rightful place in the Basilica, the place were it was born, the place where it grew.

Throughout its existence, the Choir passed under three different directors who all did their best to turn the choir into a good and disciplined choir that pleased whoever had the occasion to hear it, with its mellow and harmonious singing. Rev Fr Joseph Gauci, besides being the choir's founder, served as its first director too. Fr Gauci understood at once the need for such a choir so he did not think it twice to indulge in such a project with great spirit and initiative. Under his direction, the Choir saw its formation as well as its first experience in Malta as well as on foreign soil, in Italy. Mro Joseph Bezzina was appointed the choir's second director in November 1978. Bezzina, like his predecessor, strived to strenghten and to keep the choir improving further. During the Holy Week in 1979, the choir featured in a programme of sacred music on the State Television in Malta. In 1980, once again the Choir changed baton, and direction was this time entrusted to Mro John Galea. Joseph Bezzina assumed the role of Assistant Director and organist, a position he held till his untimely tragic death in 1998.