Thro­ugho­ut the cen­tu­ries the music of St. Mary’s Church has been clo­se­ly asso­cia­ted with three pipe instru­ments: small organ in the southern aisle, cho­ral and gre­at organs. The first pre­se­rved men­tion of the organ in our church comes from 1399. 

The gre­at organ — upon meti­cu­lo­us arran­ge­ment of the organ cabi­net the gre­at organ has now 62 stops inc­lu­ding 8 of histo­ric value which ori­gi­na­te from the older instru­ments of St. Mary’s Church. The oldest, 18th‑c. stops of Flu­te Major 8’ and Flu­te Minor 4’ were also pre­se­rved. The organ pro­spect has gained a new appe­aran­ce thanks to two towers added to it. The enti­re cabi­net has also been enri­ched with deco­ra­ti­ve wood­ca­rving. The refur­bi­shed pro­spect is main­ta­ined in the clas­si­ci­stic sty­le of Igna­cy Ziar­nic­ki.  The gal­le­ry has rega­ined its ori­gi­nal design. The reno­va­ted gre­at organ is ope­ra­ted by the 4‑manual con­so­le which allows to play simul­ta­ne­ously the chan­cel organ. The Set­zer stop action con­trol  sys­tem allows an easy ope­ra­tion and the newest elec­tro­nic sys­tem makes it possi­ble to record and re-play music at any time. The gre­at organ is inten­ded to be used on eve­ry Sun­day as well as during the col­lec­ti­ve parish cele­bra­tions. The dispo­si­tion of gre­at organ 

The 14-stop cho­ral organ - con­struc­ted by Kazi­mierz Żebrow­ski in 1912, were rein­stal­led on 15 Decem­ber 2018 after an exten­si­ve reno­va­tion car­ried out by Rie­ger Orgel­bau com­pa­ny. The organ loca­tion pre­de­sti­ned it to accom­pa­ny cano­ni­cal hours, wed­dings and small litur­gies in the pres­by­te­ry. Its remar­ka­bly noble sono­ri­ty enchants orga­ni­sts and any­one who is more ver­sed in the music mat­ter. A rich palet­te of roman­tic voices allows to cre­ate vario­us sha­des of sacred music, from the mystic pia­nis­si­mo to the maje­stic, per­me­ating basi­li­ca, for­te. The dispo­si­tion of cho­ral organ

The aisle organ - well-pre­se­rved Tomasz Fall’s  8‑stop posi­ti­ve from the end of the 19th cen­tu­ry which accom­pa­nied Fri­day nove­nas, Way of the Cross servi­ce and many other cele­bra­tions under the Holy Cross. The dispo­si­tion of small organ

The pro­ject of revi­ta­li­za­tion of organ instru­men­ta­tion in St. Mary’s Basilica