Seems Like more Artists share this same name.
1. A propos de Yoni - Burkina Faso -
http://profile.myspace.com/index.cfm?fuseaction=user.viewprofile&friendid=111347986
2. Yoni is collaboration between electronic artists Tim Hutton and Thomas Melchior who also recorded as Vulva
3. Yoni was a Swedish band which released an album, "Cotton magnet" on MNW Zone in 1996. Band members included Tess fritzon and Per liljesson.