The Voice leaves the gods and enters the Waters, who return her in exchange for the boon of staying pure. She then enters the Trees, who will not return her and are cursed to be hewn with their own handle. The Trees distribute her over drum, lute, axle and reed pipe, whose voice is therefore loud and lovely.
Speech went away from the gods, not being willing to serve for the sacrifice, and entered the trees. Hers is the voice heard in the drum, the lute and the flute. By handing over the staff of udumbara wood, level with the mouth, the consecrated man wins Speech.
What is different here:
Gives her motive; no Waters, no refusal and no curse; three instruments.
The Angirases, serving as priests for the Adityas, are offered Vac as their fee and refuse her, then accept the Sun. Angry, Vac becomes a lioness and ranges between the gods and the Asuras, seizing everything. Both sides call her, Agni for the gods. She asks what she will get; the gods promise the offering will reach her before Agni, and she promises that blessings invoked through her will be fulfilled. Hence ghee is poured on the high altar, which is Vac.
What is different here:
A different occasion: she leaves because she was refused as a gift; she is a lioness, not hidden in wood; she returns on terms.
Sources: Pancavimsa-Brahmana: the Brahmana of Twenty Five Chapters, tr. W. Caland (Bibliotheca Indica, 1931); The Veda of the Black Yajus School (Taittiriya Sanhita), tr. A. B. Keith (1914); The Satapatha-Brahmana, tr. Julius Eggeling (Sacred Books of the East 12, 41)