| ID | Title  | Author | Language | Number of records | Number of melodies |
|---|---|---|---|---|---|
| 165 | Iam novae legis Iam nove legis | Anonymous | Latin | 1 | 0 |
| 406 | Iam odas gens catholica | Anonymous | Latin | 0 | 0 |
| 57 | Iam praestolantes gloriam Iam prestolantes, Jam praestolantes, Jam prestolantes | Anonymous | Latin | 4 | 1 |
| 164 | Iam pridem hiemalibus | Anonymous | Latin | 1 | 0 |
| 218 | Iam verbum deitatis | Anonymous | Latin | 0 | 0 |
| 491 | Iam virtus almi numinis Iam virtus almi numinis | Anonymous | Latin | 1 | 1 |
| 636 | Ich gricze dich morgensterne | Anonymous | German | 0 | 0 |
| 490 | Iesu dulcis mater bona | Anonymous | Latin | 2 | 1 |
| 219 | Iesu dulcis memoria | Johannes de Przibram | Latin | 0 | 1 |
| 652 | Iesu mater deica | Anonymous | Latin | 1 | 1 |
| 418 | Iesus Christus dum cernitur Ihesus Christus dum cernitur | Anonymous | Latin | 1 | 0 |
| 32 | Iesus Christus nostra salus Jesus Christus nostra salus, Ihesus Christus nostra salus | Anonymous | Latin | 6 | 1 |
| 185 | Illustratam venustate | Anonymous | Latin | 2 | 1 |
| 265 | Illuxit nobis hodie | Anonymous | Latin | 0 | 0 |
| 220 | Imber nunc caelitus | Anonymous | Latin | 1 | 1 |
| 335 | Imperatrix aeterni luminis Imperatrix eterni luminis | Anonymous | Latin | 0 | 0 |
| 718 | Imperatrix angelorum eximia | Anonymous | Latin | 0 | 0 |
| 802 | Imperatrix egregia | Anonymous | Latin | 1 | 2 |
| 315 | Imperatrix egregia Iesu mater | Anonymous | Latin | 0 | 0 |
| 492 | Imperatrix egregia salus | Anonymous | Latin | 2 | 1 |
