App Shopper: Twelve Tone (Music)

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Apr 18 '12	$6.99 -> $4.99
Mar 16 '11	$8.99 -> $6.99
Mar 15 '11	$6.99 -> $8.99
Mar 13 '11	$8.99 -> $6.99
Mar 10 '11	Version 2.1
Feb 16 '11	$2.99 -> $8.99
Feb 16 '11	Version 2.0
Jan 05 '11	New App: $2.99, v1.0

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Twelve Tone

iOS iPad

A music composition tool. *** New Lower Price *** for the summer only ***
• Enter a tone row by touching the staff or playing the piano keyboard.
• Derive rows using Hexachords, Tetrachords or Trichords with the touch of a button. Color blocks help keep track of the different groups.
• Twelve Tone lets you know if any notes are repeated by highlighting both notes, checking enharmonic values regardless of octave or accidentals.
• Save your rows (rows may contain from 1 to 12 notes), complete with name and current P, R, I, RI matrix markings. Saved rows appear in a list with their name and midi numbers to help you identify them. To update a row, load it, work on it and save it. Then delete the old one, or keep it as an archive. Edit the name of the currently loaded row by just touching the name on the blackboard.
• The current state is automatically saved between launches.
• Press the play button and hear your row played back to you as fast or as slow as you set.
• Select from over a dozen rhythmic values / patterns.
• Watch the notes and piano keys highlight as the row is played.
• Select what form(s) of the row you want played just once or looped.
- Prime
- Prime then Retrograde
- Retrograde then Prime
- Retrograde
- Inversion
- Inversion then Retrograde Inversion
- Retrograde Inversion then Inversion
- Retrograde Inversion
• Each sequence can be repeated and transposed over a five octave range. Two octaves below to two octaves above the written row.
• Select the direction you want the octaves played in.
You can change any of these parameters on the fly. Currently, rhythmic pattern changes happen at the beginning of the next loop. Form changes happen instantly and reflect the current stat of the row, so if you change the root note, the inversion which may be playing, will reflect the new inversion values.

•• Twelve Tone will automatically create the Prime, Inversion, Retrograde, and Retrograde Inversion Magic Square.

• Matrix Audio! Hear the pitches as you mark them in the matrix square. The marks indicate the row form in which the pitch belonged; Prime, Inversion, Retrograde, and Retrograde Inversion.

• Lock the matrix to avoid accidentally marking or unmarking notes, and erase the entire square with the touch of a button. (You will need to unlock the button first.)

• Lock the prime row and transpose it to C to use the Absolute Pitch Method for row labeling in the matrix.

• Two fun interfaces to work in; black ink on white, or chalk on a chalkboard.

Comes preloaded with the following rows:
Alban Berg's Lyric Suite
Babbitt's Composition for Four Instruments
Schoenberg's Variations for Orchestra Op.31
Schoenberg's Piano Piece Op.33a
Webern's Concerto Op.24
Webern's Piano Variations Op.27
Webern's String Quartet Op.28