| The construction of the second movement is descended from plainchant graduals and hymns. |
| The chants set were Vespers responsories, Mass graduals, and alleluias, and perhaps some processional antiphons. |
| Graduals are among the most elaborate of all chants and are performed by soloists and choir in alternation. |
| They were to sit in cloister when reading each reading his own book, save those who might be singing from antiphoners, graduals, or hymnaries. |
| We also have a good number of liturgical manuscripts, for example the set of large-format graduals and antiphonals Cod. |
| As we shall see, the antiphonaries and graduals of Santa Maria del Fiore include illuminations that are clearly Medicean in their iconographic details. |
