Melodic multiphonic playing
Each multiphonic requires its own specific air angle and speed, and sometimes also hand position. For this reason it can be difficult to move smoothly between multiphonics at speed or with clear rhythmic precision. At slow speeds, however a smooth flow from one multiphonic to the next is more reliable, allowing time for each sound to respond.
In order to maintain continuity and rhythmic precision, it is advisable to use multiphonics of a similar kind and dynamic. For example, it can be effective to move from one harmonic multiphonic to another, especially if both multiphonics are based on the same partials of the harmonic series, or to begin with a specific multiphonic fingering and to explore closely related fingerings. Since each multiphonic has its own dynamic range, care must be taken to ensure that dynamics are selected accordingly. Keeping one pitch constant within the multiphonics will help to ensure a smoother melodic line.
Example of melodic multiphonics from Robert Dick, Flying Lessons No. 1