Within the OEK, the first two volumes of the six-part edition of Jacques Offenbach's progressive duos for two cellos op. 49-54 are available now. The compositions created by Offenbach who was a virtuoso on the violoncello himself, are not only suitable as methods of violoncello technique but are also suited for duet playing and delightful music-making at home and at performances. Both parts are contained on the accompanying CD and can be listened to separately or together.