The Group Berywam is a french group composed by 4 members. And their group names is comes from their individual names.
Beatness, Rythmind, Wawad and Mb14
Thats why BeRyWaM.
And you need to listen this newly released video made by them the Chinese Trap

If you want to listen more beatbox made by them visit their YouTube page. https://m.youtube.com/channel/UCxXFx2jz8N02sNqv1VeDEGA

Thanks for reading and listening

Best regards,

@englybird