Nota bene is a Latin and Italian phrase meaning "note well". There are at least three artists by this name. Czech bluegrass group, French rap group and Russian rap group. 1) (?1993?-present) Czech bluegrass group contains leding vocalist Petr Vacek, Radek Starosta (guitar,vocals), Michal Žára (violin, vocals), Otakar Zelenka (banjo, vocals), Miloš Sommer (mandoline, vocals) and Petr Haťák Prokop (bass).
Their video.
From their homepage:
"What to say about us?
We like this music
and we hope that you can hear it."

Read more about Nota Bene on Last.fm.