💡 How to program a Behringer TD-3 (and any 303-style synth) This infographic is a quick cheat-sheet you’ll want to save — because a 303 doesn’t work like a normal synth keyboard. You don’t play it… you program a sequence first, then shape the groove. Here’s how to read it: 1️⃣ Clear the pattern Enter Write Mode and erase the previous sequence so you start from a blank pattern. 2️⃣ Create the steps (the rhythm first!) In Time Mode you tap the 16 steps. Important: you are not entering notes yet —