This is a list of the repertoire I am familiar with. I am however always learning new music and so this list is by no means exhaustive.

Bach

Bereite Dich, Zion
Buss und Reu
From the St. Matthew Passion:
Erbarme Dich

Brahms

Auf dem Kirchofe Op.105 No.4
Sonntag Op.47 No.3
Ständchen Op.106 No.1
Wie Melodien zieht es mir Op.105 No.1

Britten

Canticle II: Abraham and Isaac
La belle est au jardin d'amour
Olover Cromwell
Quand j'etais chez mon pere
The Salley Gardens

Debussy

Le son du cor s'afflige
Les Cloches

Dowland

In darkness let me dwell
Time stands still

Duparc

Extase

Faure

Claire de Lune
Les Roses D'Ispahan Op.39 No.4

Finzi

Let Us Garlands Bring

Handel

From the Messiah:
But Who may abide the Day of his Coming
He Shall Feed his Flock
He was despised
Thou art gone up on High
From Jephtha:
Happy this Embassy, Dull Delay
Glad Tidings of great joy
If such thy cruel purpose, On me let blind mistaken zeal

Ireland

Sea Fever

Ives

At the River

Monteverdi

Lasciatemi morire
Oblivion Soave

Purcell

Come Ye Sons of Art Away
Here's the Summer, Sprightly Gay
Summer
If Music be the Food of Love (First and Third versions)
Music for a while

Schubert

Das Rosenband
Der Konig in Thule
Du bist die Ruh
Was ist Sylvia

Tippett

Songs of Ariel

Vaughan Williams

Linden Lea

Warlock

Captain Stratton's Fancy
The First Mercy
Lullaby