Listen to Voices, Mixed, Walla, Busy, Happy Sound Effect online. Voices, Mixed, Walla, Busy, Happy Sound Effect is an English language song and is sung by Pro Sound Effects Suite. Voices, Mixed, Walla, Busy, Happy Sound Effect, from the album Pro Sound Effects Suite 34 - Voices, Vocals and Group Sounds, was released in the year 2007. The duration of the song is 0:16. Download English songs online from JioSaavn.