The Conn Helleberg is the most famous tuba mouthpiece in the world, and the Conn Helleberg 7B is a slightly shallower-cupped version of the original. Named after the preeminent tuba player of his time, August Helleberg from the Sousa band, the Helleberg is renowned for its deep, rich and organ-like tone. Want pedal tones? Helleberg. Want High Fs? Helleberg. In a word, Helleberg. It is everything you want a tuba mouthpiece to be.