Random

Random moves a note up or down, by chance: an arpeggio that sometimes jumps an octave, a step line
that wanders a degree up or down in the key, a bass that flips between root and fifth. At a low
chance it adds the odd variation; at a high one it turns into a new melody built on the old one.

It is a MIDI effect: it sits in an Orbiter's chain before the instrument, after the generator if
there is one. A change applies from the next note: a note already sounding keeps its key, and its
release sounds there.

Loads as a bypass

Random loads with Chance at 0 %: every note passes exactly as it came in. Raise Chance and notes start
to jump an octave up or down.

Draw

Control	What it does
1Chance	How likely a note is moved. At 0 % no note moves; at 100 % every note does.
2Choices	How many intervals a moved note can land on, each way. With Choices 3 and an interval of 12 st, a note can move one, two or three octaves.
3Random or Alternate	How a moved note picks its move. Random draws one of the moves for each note. Alternate takes the moves in turn: up, down, further up, further down… A chord's notes take successive places, so a chord spreads out.

The light after Draw flashes when a note was just moved.

Interval

Control	What it does
4+, − or ±	Which way a note moves. ± (as it loads) moves it either way, so a line drawn around itself keeps its register.
5Interval	One step of a move. In semitones (1 … 24 st, 12 st as it loads: an octave), or, with Follow on, in degrees of the scale (1 … 14 deg, 7 deg as it loads).
6Follow	On, the interval counts degrees of the Orbiter's scale, so a moved note stays in the Orbiter's key. Off (as it loads), it counts semitones. Turn Follow on once the Orbiter has a key: with no scale set, a degree is just a semitone.

Random moves the line in the key, it doesn't correct it: for a strictly in-key result, put Scale
after it.

The edges

A move past the lowest or the highest MIDI note folds back by whole octaves, so the note keeps its
note name. There is no range of its own: put Pitch after Random to keep a register.

The screen

7The screen shows a dream from Méliès' A Trip to the Moon (1902): where the last note went among the
moves it could take.

The crescent moon with its dreamer is the note coming in.
The small stars are the moves, one each, at their real height: higher is up.
The big star, held up on a staff from the rocks, is the move the note took, with an arc from
the moon.
Saturn lights when the note stayed where it was.
With Alternate, a dotted line joins the stars in the order the walk takes them.

The corners and the crosshair

The number at the top left is Chance: drag it up or down (double-click resets it). At the top
right, Direction (up, both ways or down) and at the bottom right, Mode (Random or Alternate)
are rows of dots: tap to take the next. The crosshair is the sky: drag it sideways for
Choices (how many stars) and up or down for Interval (how high they reach, in semitones or
degrees); the triangles on the edges move one of the two alone.

Try it

An arpeggio that leaps. After an Arpeggiator, before the instrument: Chance 30 %, ±, Interval 12 st. Now and then a note jumps an octave.
A line that wanders in the key. With the Orbiter's key set: Follow on, Interval 1 deg, Choices 2, Chance 50 %.
A bass between root and fifth. On a one-note bass line: +, Interval 7 st, Choices 1, Chance 40 %.
More, the further you move. Map Chance to an axis: at rest the line plays as written, and it loosens as the axis moves away from rest.

Mapping

Axes can drive Chance, Choices and the interval: a World that moves away from the
centre plays a looser line (Chance), or a wider one (Choices). Random · Alternate and Follow can be
toggled. The two intervals map separately, so switching Follow never changes what a stored number
means.

In a room

Every player in a room hears the same notes moved the same way.

Draw​

Interval​

The edges​

The screen​

The corners and the crosshair​

Try it​

Mapping​

In a room​