Brazilian Voices Quiet Bossa

I'm sorry, but I do not have sufficient reliable knowledge about an organization specifically named 'Brazilian Voices Quiet Bossa.' It is possible that this could refer to a project or performance by the well-known group Brazilian Voices. Brazilian Voices is a non-profit organization and vocal ensemble founded in 2001, based in Florida, USA, which promotes Brazilian music and culture through its performances, including bossa nova and other Brazilian music genres. They have been recognized with several awards for their work in spreading Brazilian cultural heritage. However, without specific location details or more context, I cannot provide more precise information about 'Brazilian Voices Quiet Bossa.'