In this video by Brick Technology, they make a LEGO drum machine. It works a bit like a music box, with a set of eleven piezoelectric drum pickups each actuated by its own Technic-built drum stick. These sticks are labeled, in order,


and I can't for the life of me figure out what all the letters means.

I'm familiar enough with drums (and can hear well enough to figure out) that K is for the Kick (or bass) drum, S is for the Snare drum and H is for the Hi-hat. Some investigation into the matter indicates the the three T's are most likely for the three Toms, with the two C's for the Crash cymbals and the R for the Ride cymbal, but I am not as confident with this assessment. And I can find nothing to determine what the two A's are for - are they just "Auxiliary" percussion, or is there some part of the kit that starts with A?

1 Answer 1


There's a clue around the 2:00 mark. Activating an A trigger makes a different percussion sound. There will be many other different sounds available from the module, activated by, actually, any of the triggers.

They could be cowbell, guiro, quickly closed hi-hat, wood block, tambourine, choked cymbal, triangle, to name just a few. So, yes, auxiliary is most likely what A represents, and those will be the sounds that would get changed most frequently, as all the others constitute the basic drum kit.

A very clever and impressive idea..!

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.