Note 4 — § 12. Plutarch's Dialogue on Music.

An objection to this identification has been based on the words of Pollux, Onom. iv. 78 kai harmonia men aulêtikê Dôristi, Phrygisti, Lydios kai Iônikê, kai syntonos Lydisti ên Anthippos exeure. The source of this statement, or at least of the latter part of it, is evidently the same as that of the notice in Plutarch. The agreement with Plato's list makes it probable that this source was some comment on the passage in the Republic. If so, it can hardly be doubted that Pollux gives the original terms, the Platonic Lydisti and Syntonolydisti, and consequently that the later Lydian is not to be found in his Lydios (which is a 'relaxed' mode), but in his syntonos Lydisti. There is no difficulty in supposing that the mode was called syntonos merely in contrast to the other.