P A R A L L A X I S

PERFORMANCE NOTES

FORCES ========

The score for parallaxis is in four parts and can be played by any four melodic instruments, multiple quartets may perform simultaneously under the direction of one or more directors.

NOTATION ========

Parallaxis uses a combination of graphical, and more traditional proportion style notation. There are three lines to the stave representing the registral areas low, middle and high. The size of the noteheads and thickness of lines represent dynamics - small note heads are played most quietly, larger noteheads are louder. There is very little traditional rhythmic notation, instead the score adopts a "scrolling score" paradigm. The score appears from the right of the screen and scrolls in a leftwards direction. In the left half of the screen are the shaded areas called the playzones, in the center of these playzones is a vertical line representing the playhead, as the music passes over the playhead it is executed by the performer.
Each of the parts plays back at a slightly different speed from the others causing the parts to constantly shift in and out of phase with one another.


SCREEN SCORE / PROJECTION ========

No special software is needed to view the screen score for Parallaxix. It is written as a web app and runs in a web browser; for best results use Chromium, Google Chrome, Firefox orSafari. Avoid Internet Explorer if you use windows. The Score/s may be projected using a digital projector plugged into a laptop. These projections maybe visible to both musicians and audience. Optionally each member of the ensemble reads the score from a laptop placed on a music stand. This maybe preferable where unusual spatial arrangments of the musicians is prefered. The web based score is designed in such a way that everyone connected to that page will see the same thing - and that any controls touched on the directors laptop will controls the scores in front of all the musicians.

DURATION ========

Each of the parts is cyclical, looping constantly with the tail joining up with the head of the music seamlessly. This means the piece is of indeterminate duration, but given the amount of material presented in the score i would suggest between 8 and 14 minutes as an appropriate performance length. At the bottom left of the screen is a timer indicating how long has elapsed since the start of the piece - this is your reference for when to finish the performance For example the ensemble may decide collectively before a performance that after 8 minutes on performer stops holding a sustained note and each 20 seconds after that another performer also stops holding a sustained note. When all performers have stopped following the score and are sustaining a pitch they may graudually diminuendo to nothing and the piece is over.

THE ROLE OF THE DIRECTOR ========

In the Ensemble version there is another element - the role of the conductor/director. There need not be a director of a performance - the score may simply be followed as it appears with the different speed lines shifting phase with one another. However, if a director is involved in a performance their role is to make live interventions to the flow of the perfomance. A director can alter the speeds of the individual parts using the + - minus buttons seen on the left and right of the screen as well as pausing individual parts by clicking on the playzones or depressing and releasing the number keys 1 through 4, or the ensemble as a whole using the full stop space bar keys. (click the help link for a full list if directors keybindings)

MULTIPLE QUARTETS - MUTLIPLE SCORES ========

Also, if a director is involved the size of the ensemble may double and be divided into two groups. In this case the director can use two laptops to control two groups, each group playing different instances of the score. Here the two groups ensemble will slip in and out of phase with one another the same way as is happening internally within the individual groups! The number of groups playing for independant scores need not be limited to two. One director can manipulate as many groups as deemed appropriate for the performance - there may also be more than one director.

SPATIAL POISTIONING OF MUSICIANS AND ENSEMBLES

TODO

SETTING THE INITIAL SPEEDS AND STARTING LOCATIONS ========


Each version can be made unique by setting new starting points for each of the instrumental parts, as the score can be seen as a loop there is no fixed starting point so new ones can be choosen for each performance. Also the speed relationships between the parts may also be changed. At the moment this involves changing the values in the parallaxis.js file. TODO - add this facility to the web interface.