Listen to Concentratie Verbeteren online. Concentratie Verbeteren is an Instrumental language song and is sung by Konzentration Akademie. Concentratie Verbeteren, from the album Konzentriert mit Filmmusik - Entspannende Musik-Soundtracks, was released in the year 2020. The duration of the song is 6:45. Download Instrumental songs online from JioSaavn.