All the most useful MIDI objects provided in Max.

This allows you to see all the most useful MIDI objects in Max collected together in one window. If you don’t know what a particular object does, option-click (or alt-click) on it to see its help file. You can send MIDI into this patch to see what kind of data it is. You can connect the midiin object to a print object if you want to see every single MIDI byte coming in.

By default, the input objects get their data from all connected devices. By default, all the output objects send their data to the first device in the list of available devices. To choose a specific MIDI device for either input or output, double-click on the object and hold the mouse down, and then choose a device from the resulting popup menu.