The TN4 is matched to the Tama by Kanstul 5/4 Marching Tuba in BBb. Modeled after Tommy Johnson's mouthpiece, the TN4 combines power and ease of play. The "V" shaped medium-deep cup allows for greater control and intonation that is more consistent and easier flexibility throughout the full range of the instrument. Again, this mouthpiece is also designed to be used in both the concert hall and on the field.