Christmas is one of the most joyful seasons of the church year, and is celebrated in the Cathedral with appropriate solemnity. Here are details of the various events taking place at this time.
Here also are details of confessions in the days before Christmas.
Music for Galway, Irish Baroque Orchestra and Resurgam Choir present a performance of G. F. Handel's ever-popular oratorio Messiah in the Cathedral on Saturday 9 December at 7:30pm.
The Three Tenors - Dominic McGorian, Shane Morgan and Derek Moloney - present a concert of popular classical music in the Cathedral on Thursday 21 December at 8:00pm. The choir of Scoil Íde will also appear on the night.
"Breath upon the Flame" - a candlelit concert of traditional music re-imagined for voice, brass, strings and percussion, featuring Eimear Quinn and Dublin Brass Ensemble.
The Esker Festival Orchestra, conducted by Peter Joyce, gives a concert in the Cathedral on Friday 25 August at 8:00pm. The programme includes Tchaikovsky's Symphony no. 6 ("Pathetique") and Maher's Songs of a Wayfarer with mezzo-soprano Caroln Holt. Tikects are €15 (concessions €10) at the door.
Galway Baroque Singers are joined by Dún Laoghaire Choral Society for a concert of music by Vivaldi for choir and orchestra. The concert takes place on Saturday 17 June 2017 at 8:00pm. The choir and orchestra are conducted by David Brophy.
Tickets are available online and at the door.
The Lake Houston Chamber Singers, from Texas in the USA, give a concert in the Cathedral on Sunday 11 June 2017 at 7:30pm. The programme includes music by Tye, Victoria and Morley, as well as arrangements of Irish and Scottish folk-tunes. Admission is free.
The choir will also sing at the 6:00pm mass that evening.
The Sonoran Desert Chorale, from Arizona in the USA, sings a concert in the Cathedral on Wednesday 7 June 2017 at 7:30pm. Admission is free.
The 24th annual series of summer concerts in Galway Cathedral takes place between 6 July and 10 August, on Thursday evenings at 8:00pm.
This year's series includes an orchestra-and-organ spectacular, an intimate performance of music for soprano, lute and organ, and a performance by a 100-voice choir, as well as the usual recitals on the Cathedral's magnificent organ.
Full details of all the concerts are on the Galway Cathedral Recitals website.
The internationally-acclaimed choir of Wartburg College, Iowa, USA, give a concert in the Cathedral on Sunday 21 May 201 at 8:00pm. Admission is free.
The programme includes music by Pachelbel, Schütz, Philips, Jennings, Chesnokov, McGlynn, Whitacre and others.