Where does “oda” come from?

oda (Medieval Latin) comes from Ancient Greek ᾠδή, from Ancient Greek ἀείδω, from Proto-Hellenic awéidō — to sing.

Ancestry of “oda”, step by step

Step	Language	Word	Meaning
1	Ancient Greek	ᾠδή	song, ode; legend, tale, story
2	Ancient Greek	ἀείδω	To sing, chant, praise; To make various noises:...
3	Proto-Hellenic	awéidō	to sing

oda — Etymology, Origin & Word History | Etymology Explorer