Nightingale (2006)

A nightingale lived in a beautiful cage in the house of a rich merchant. The merchant spared nothing for his nightingale, so the nightingale lived without grief and worries, but he dreamed of freedom!… And one day, thanks to the kind advice of his brother, the dream came true – the nightingale soared high into the sky and sang a joyful song.

Unfortunately the movie Nightingale is not yet available on HBO Max.