[Quetscher]

Hey Alan,

yeah, it’s like blowing into a trumpet. If you need instructions, there are some good YouTube videos on how to blow into a trumpet mouthpiece.
But be aware that you don’t produce a proper second note by doing that, it’s just like adding noise to the tone of your melodica, like making it sound dirtier.
By the way: I tried doing this with and without the cap at the bottom to release the moisture, and I found it way easier without (but probably that works only for the Hohner Piano 36).
Greetings, Andy