ἐπιχορεύω

A. dance to or in honour of a thing, Ar. Pax 1317 ; come dancing on, X. Smp. 9.4 ; comically of dishes brought to table, ἄριστον ἐπεχόρευσεν Diph. 44.1 ; εἰς τὸ μέσον ἐ. σαπέρδης Id. 64.4.
II. add a chorus or choral song, τοιοῦτό τι Philostr. VA 5.14.
Liddell, Scott & Jones
A Greek-English Lexicon, 1940
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