cf. Pausanias the Atticist and Aelius Dionysius in Eustathius' Commentary on the Iliad 1167.19; also Hesychius, Aristoxenus, Ammonius, and a scholion on Aristophanes, Wasps 1503, where the headword occurs (web address 1). See also epsilon 972 and pi 3159.
LSJ s.v. distinguishes between three senses of this headword, one quite general (harmony, musical or more general) and two kinds of dance: (II) the tragedic kind noted in this entry and (III) the comic 'knuckle-dance' of Wasps. III, however, should not be regarded as objectively different from II but a comic application of it.