"hortus deliciarum" is one of the first sources of polyphony originating from a convent. the manuscript contained at least 20 song texts, all of which were originally notated with music. those that can be recognized now are from the conductus repertory, and are mainly note against note in texture. the notation was in semi-quadratic neumes with pairs of four-line staves. two songs survive with music intact: "primus parens hominum", a monophonic song, and a two-part work, "sol oritur occasus".