Orca is a two-dimensional esoteric programming language in which every letter of the alphabet is an operator, where lowercase letters operate on bang, uppercase letters operate each frame.

The application is not a synthesiser, but a flexible livecoding environment capable of sending MIDI, OSC & UDP to your audio interface, like Ableton, Renoise, VCV Rack or SuperCollider.



The base operators are present in every version of Orca, no matter the platform:

The special operators make use of a platform's devices, here are the suggested special operators:

An introduction to basic operations


This section will teach the basics of playing a note and a sequence of notes.

Send a midi note:


Play a random note:

aRG, will output a random value between A & G, the rightside uppercase letter indicates an uppercase output.


Make a melody

04TCAFE, will create a track of 4 notes, and output its first value.


Play the melody

8C4, will count from 0 to 3, at 1/8th speed.



This section will teach the basics of automating logic decisions and changing the values of operators dynamically.

Play every second note.

2I6, will increment to 6 at a rate of 2.


Play a note with an offset

1AC, will add 1 to C, to output D. To get D#, use the lowercase d, like 1Ac.


Play a sequence back and forth

The combination of the output of C6 into B3 will bounce a value between 0 and 3 over 6 frames.


Play a note at a specific interval



This section will teach the basics of creating new operators procedurally.

Halt a moving operator


Read an operator at position

22O, will get the operator E at the offset 2,2.


Write an operator at position

22X, will output the operator E at the offset 2,2.


Animate a projector

B8, will bounce between 0 and 8.



This section will teach the basics of storing accessing and combining that stored data.

Write a variable

aV5, will store 5 in the variable a.


Read a variable

Va, will output the value of the variable a. Notice how variables always have to be written above where they are read.


Read 3 variables

3Kion, will output the values of i, o & n, side-by-side.


Carry a value horizontally and vertically


Carry a bang

This method will allow you to bring bangs into tight spots.


We hope the abive tutorial was enlightening, if you have questions or suggestions, please visit the forum, or the chatroom.

Base 36 table

Orca operates on a base of 36 increments. Operators using numeric values will typically also operate on letters and convert them into values as per the following table. For instance Do will bang every 24th frame.

0   1   2   3   4   5   6   7   8   9   A   B
0   1   2   3   4   5   6   7   8   9   10  11
C   D   E   F   G   H   I   J   K   L   M   N
12  13  14  15  16  17  18  19  20  21  22  23
O   P   Q   R   S   T   U   V   W   X   Y   Z
24  25  26  27  28  29  30  31  32  33  34  35


Here are a few interesting snippets to achieve various arithmetic operations.

1X..    Modulo
6I4.    Will output the modulo of 6 % 4.    

cA1.    Uppercase
.dAZ    Will output uppercase C.

H...    Lowercase
CM1.    Will output lowercase C.

.L0.    Not Null
..F0    Will bang if L free input is not null.
De-evolved Orcabit


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