Backun MoBa B flat And A Clarinet BarrelThe Backun MoBa clarinet barrel produces a full, rich, dark sound that is favored among orchestral clarinetists. The darker tone production that the MoBa barrel produces is paired with an increase in resistance and focus. Articulation is also easier throughout the entire range of the clarinet. The MoBa is great for orchestral repertoire in both a section and as a soloist.