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Tutorials: How to play the Lambdoma from a conventional midi keyboard

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Contents

Intro

The Lambdoma is 2D. So there are two ways to think about it:

eight rows each with eight cells

eight columns each with eight cells.

There are several ways to play it from the music keyboard. By rows, by columns, and various ways of assigning keyboard keys to the Lambdoma.

How to do it

First, you need to connect the midi keyboard to your computer. If there is no midi connection you can use the Edirol UM1-SX or similar.

Use it to connect your keyboard to the computer.

Select it in the In menu:

Lambdoma In.png

Make sure it says CURRENTLY OPEN.

In the In As menu, choose to treat it as a music keyboard:

Lambdoma In As.png

You need to choose how you want to play it. Here it is set to consecutive white keys. For details see the next section.

Then just play the notes from the music keyboard. You will see the notes on the Lambdoma picture as you play.

Music Keyboard Options

Consecutive white keys

To get an idea of how it works, play this score - the first treble clef is shifted UP two octaves on your midi keyboard. The last bass clef is shifted DOWN two octaves:

Lambdoma test.png

The first note, C# is shown grayed out - you play it, but it doesn't sound. It is a key switch (see next section).

You can play any C# key. It selects the rows of the Lambdoma. (If you want columns instead, you play an Eb first which will swap rows and columns.)

The chord (bar 2) plays the first column of the Lambdoma - or first row sloping diagonally up to right in the diamond lambdoma.

Bar 2
Lambdoma first column.png

To play it you press these keys on your music keyboard:

Lambdoma first column keys.png

So every eight white keys play one row of the Lambdoma.

In the score, each bar after the first one plays a row of the Lambdoma.

Bar 9
Lambdoma second last row.png

Played from keys
Lambdoma second last row keys.png

key switches to swap rows and columns, etc

These key switches can be used if the keys are available (not used to play any other notes).

They can all be used with the option to play from successive white keys.

You can swap rows and columns by playing these key switches before any other notes:

These keys don't sound. They just swap the playing style - to play rows or play columns

You can also play auto harmony chords with each note you play using these key switches.

The auto harmony chords are configured in Lambdoma Auto Harmony and Show Tonality Info (Ctrl + 145). The idea there is that any notes in the same row of the Lambdoma are in harmony with each other. So also, any notes in the same column are in harmony. So this makes it easy to play harmonious chords along with the notes you play by adding in extra notes in the same row or column.

Note that you can also swap rows and columns using the CAPS LOCK key which is useful for some of the keyboard options.

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