Ode is a literary term that originated with the ancient Greek theatre, and specifically the songs/chants of the chorus as they moved across the broad, open area in front of the stage. Formally, it has three parts: The Strophe, Antistrophe and the Epode. The first accompanied dances to one far side, the second to the opposite side, and the third to the center.
In the Romantic literary tradition, it was not so formal, but became an extended study or contemplation of an idea. Keats wrote the masterworks, and looking over his Odes - on Melancholy, to the Nightengale, on Autumn - could help you see if it is the term for you.
However, without lyrics, "Ode" does not strike me as the best term for your piece.
Etude ("study") or, depending on the mood you are depicting, a Caprice (a fun piece), a Celebration, or some other term might do better.
Italian is often the language of choice for such titles, but there is no reason you can't make it in English, or whatever your native tongue may be.
Ask yourself, what would YOU call it? That may be the very ticket.