Mass I, II, IV, IX, XI, XIV, XVI, and XVII. Plus ad lib Kyrie I and X. and the Requiem.
Credo I, II, IV, and VI. plus 2 settings of the Asperges and the Vidi Aquam.

They probably know Mass VIII and Credo III but we don't sing them.

The Choir also sing two polyphonic settings Dixit Maria, Hasler and the Byrd 3 part (both with Credo). A visiting paid choir come 10 times a year and also sing polyphonic settings but they never sing the Credo.

This is EF so no English settings!

We use the ICEL chant mass year-round. Usually in English, at certain times in Latin.

What do you use, and how often do you change?

What is this "change" you are talking about? We never change.

I'm a bit too AR about Ordinary Settings (EF), but here is what we do (attached).

I use cycle schedules to manage my planning. The cycle schedules ensure that there is a disciplined approach and that I cover all of my goals vis a vis scheduling. I used to be on a 3 year cycle for both my polyphony (primarily motets) and hymns / Christmas Carols as well as the chant. I just finished a major revision of the schedules to shift to 4 year cycles (my major revisions are typically 12-15 years apart) and added polyphonic Mass settings to have a formal cycle schedule as well.

Next season (2019-2020) will be my final Year 3 in the 3 year cycle plan. 2020-2021 will be my first Year 1 in the new 4 year cycle plan.

Within any given year, there are a few rules (some of them standard in any EF parish, others that I have for my groups)... Mass I is only for paschal-tide. Mass XVI, XVII, and XVIII are only for penitential seasons of Advent or Lent. Credo VI is my penitential Credo. Mass IX and X largely for Marian related feasts. Alternate Asperges I and II are distributed across Advent and Lent. Vidi Aquam is for paschaltide. Benedicamus Domino in penitential seasons; Ite Missa Est everywhere else.

Other than the few simple rules above, it is largely a matter of slotting appropriate chant or polyphonic Ordinaries into appropriate Sundays / Feasts (our choir season averages between 75 and 80 Masses with a summer break of 2 months where myself and occasional volunteers sing the Masses). I use Excel to automatically count my usage of each Mass setting and motet (and hymn) to be sure I don't over-utilize or under-utilize. Of course some things will only be used 1-2x... that can't be helped. And there are other things that we've invested considerable practice time where I expect usage to be above average. Excel just gives me the means for managing those expectations.

Of course there are periodic minor revisions to the cycle schedules where I add (or sometimes remove) motets or Mass settings. This season, a main focus of our rehearsal is time budgeted to some of the new polyphonic Mass settings (MARC, B4, L3, starting the T4 and MdM and Credos of 3 Masses). In another 2-3 years, I'm projecting another push on polyphonic Mass settings where we will learn some of the ones highlighted in yellow. There are other Mass settings which are intended for future use, but which aren't in the planning pipeline yet.

Usually, I try to have my music schedules 12-18 months in advance. However, because of the Sacred Music Pilgrimage in 2023, I'm working on completing my music schedules out through the 2023-2024 season. Right now I'm just starting the 2021-2022 season.

If we were to add another Credo besides I and III, which would you recommend?

That's a hard question - they all have their own character. VI is probably my personal favorite, but I would recommend IV first. In a former life we used IV as a primarily Marian Credo (no real reason why) - but it is probably the standard after I and III.

At my last parish, the pastor disliked VI (possibly because it is a bit long, possibly because it is a bit repetitive). Before he banned it (really), when he complained I pointed out that it WAS Lent, something he did not receive all that well!

@mmeladirectress

I would recommend Credo IV, it is beautiful, we sing it withe Mass XI, so it is sung on the Sundays after Epiphany and after Pentecost. In older books Credo IV is subtitled Cardinalis.

Credo VI is good too but it is repetitive, one priest did not like it when we sang it with Male Cantor alternating with the choir, so I changed the arrangement of Cantors, so we have the ladies alternate with the men, now everybody likes it.

We use...
St. Frances Cabrini
Heritage
Christ the Savior
Belmont
and for the ad orientem Mass, we use the Latin Chant Mass in OCP Breaking Bread.

We usually change the settings seasonally; currently on SFCabrini, but will use Belmont for Lent (as penance).

As an aside, we are ditching OCP in time for Advent 2019. I am very much looking forward to new Mass settings!

Mass of St Thomas More (I think that's what it's called), Fr. Samuel Weber
Missa Sancta Maria Magdalena, Willan
Mass VIII
Missa Jubilate Deo

Spanish Choir:

Misa al Sagrado Corazon de Jesus, Carlos Zapién
And an unnamed one as well

Mass of Saint Philip Neri: http://www.pauljernberg.com/shop

I believe this is the finest English setting for OF that is accessible, beautiful, sacred, and connected to the great sacred music tradition of the church.

In the Cathedral I worked at for 12 years, the standard was to change the mass setting every 6-8 weeks, and rotate through about 12 settings pre-2010, and 5-6 after. It worked fine there.

In the small country parish were I now help out, they had been singing only those chants in the Roman Missal for the past few years. The Kyrie, Sanctus and Agnus Dei would alternate between English and Latin without specific parameters. They were always started by the priest, so all would answer in whatever language he used to start. That is still the case for the Kyrie and Sanctus, which are still from the Missal. As the English mass each weekend, the Gloria is by John Lee, and the Agnus Dei is from the Missa de Angelis. The Sanctus from that mass will be introduced in due time. The Our Father is chanted to the Snow melody.

As the parish is not mono-cultural, at liturgies that encompass the entire congregation, the Gloria is switched to the Missa de Angelis, the Sanctus is in Latin for certain, and the Pater Noster is swapped in for the Our Father.

The congregation was very happy to get away from the Missal Gloria, and are accustomed to using the same ordinaries for years on end, and they have a history of that going back at least into the 90s.

@toddevoss

Try this, https://www.youtube.com/watch?v=1sVt4Ni1z3U

We used (2 choir directors ago) to sing the Mass IV Kyrie in a similar manner but with a drone for the lower voice.

@irishtenor

I have heard of such things, but it really is easy, you split the choir into 3 groups, one sings at pitch, another sings a 5th or a 6th below (or a drone), and the other a 5th or a 6th above. Well that is how Christopher Hodkinson got us to do it for any bit of chant in the Liber.

are things like this notated anywhere?

Sometimes, but usually when it has been input as in these attached files.

The first is the Solemn Salve with drone; the second is Bonus Est (Palestrina); the last is the accompanying psalm with drone for the Bonus Est.

Thanks @tomjaw. @irishtenor - I am just a music-loving PIP - so won't be able to help you track such things.