Passage 9.29.6
ταύτης τε οὖν εἰκὼν καὶ μετʼ αὐτὴν Λίνος ἐστὶν ἐν πέτρᾳ μικρᾷ σπηλαίου τρόπον εἰργασμένῃ· τούτῳ κατὰ ἔτος ἕκαστον πρὸ τῆς θυσίας τῶν Μουσῶν ἐναγίζουσι. λέγεται δὲ ὡς ὁ Λίνος οὗτος παῖς μὲν Οὐρανίας εἴη καὶ Ἀμφιμάρου τοῦ Ποσειδῶνος, μεγίστην δὲ τῶν τε ἐφʼ αὑτοῦ καὶ ὅσοι πρότερον ἐγένοντο λάβοι δόξαν ἐπὶ μουσικῇ, καὶ ὡς Ἀπόλλων ἀποκτείνειεν αὐτὸν ἐξισούμενον κατὰ τὴν ᾠδήν.
There is a statue of her, and after her is Linus, placed in a small rock shaped into the form of a cave. To him they make offerings every year before the sacrifice to the Muses. This Linus is said to be the son of Urania and Amphimarus, son of Poseidon, and to have earned the greatest renown of his contemporaries as well as those who lived before him for his achievements in music; it is said also that Apollo killed him because he equalled the god in song.