[ 18. August 2014 ]


SOLO [Nr.19] app for iOS (iPhone, iPad, iPod)

Digital Technical Set-Up (Multi-Version)
Inspired to Analog Technical Set-Up of Solo [Nr.19] by Karlheinz Stockhausen

This app is for the Musician who want to play SOLO [Nr.19] of Karlheinz
Stockhausen for Study, Live Performance, Concerts, Lessons etc… It have
not sense to employ this app otherwise. You can hear fully the first
version performed by Enrico Francioni (Contrabass) and you can also Play
LIVE the only three CYCLES (of six) for all six FORM-SCHEME. With In-App
features, you can upgrade to the FULL version to play all six CYCLES of
SOLO [Nr.19] and to aid development of this app.

SOLO [Nr.19] is an algorithm that aims to implement digitally the
original analog set-up for the performance of six versions of Solo für
melodieninstrument mit rückkopplung by Karlheinz Stockhausen.
The original composition was conceived for five persons. Four
technicians plus the main instrument performer. SOLO [Nr.19], performs
the work of four technicians for each of the six Stockhausen’s versions.

In Demo mode you can hear the first version of “Solo” composition
performed by Enrico Francioni, Contrabass. With In-App features, you
will be able to feed algorithm with your audio Live.


„Solo“ (für Melodieninstrument mit Rückkopplung) by Karlheinz
Stockhausen is a piece written for any solo melodic instrument and
employs a feedback system to allow the soloist to create polyphonic
music. Written in 1966 with its world premiere in Tokyo in the same
year, its origin dates back to the same period as the composer’s work
„Kontakte“. „Solo“ uses the technique of recording onto tape with a
single head together with a moveable arrangement of playback heads,
allowing for the creation of complex sounds through accumulation.
The original version (with an analog technical set-up) requires a solo
instrumentalist as 4 assistants (technicians): three assistants
operating the opening and closing of sliders (L/R channels)–respectively
the microphone, delay-line and output–and an assistant for the change of
time values of the taps in the delay-line. During a performance a part
of what the instrumentalist plays is captured by a two-channel recorder.
Through a feedback circuit, the sections are recorded more or less
densely stacked and processed with a variable delay time; the result is
then played by two sets of speakers and mixed with the direct sound of
the soloist.
The score (Universal Edition-Wien, 1969) consists of six pages of music
and six pages of Form- Schema (the number six can be considered a key
element), in addition to explanatory notes (very detailed) for the
performance the composition. „Solo“ is one of those compositions by the
author employing „controlled alea“ as a compositional language. Indeed
many choices are left to the soloist and cover almost all the events:
from the selection of a version, the positioning of the material, the
types of tonal variation requests, the order of pages and more. In
reality these faculty are provided as input by the composer through the
management of macroscopic or microscopic order parameters, restricting
the possible versions (virtually infinite) at a predefined or definable
set of possibilities. In this piece, the role of the interpreter is very
important in the creation of a performance that is always unique and
unrepeatable every time.


SOLO [Nr.19]
Digital Technical Set-Up (Multi-Version)
Inspired to Analog Technical Set-Up of Solo [Nr.19] by Karlheinz Stockhausen

The Authors:
Enrico Francioni and Alessandro Petrolati
Support: francioni61021@libero.it

All rights reserved apeSoft © 2014

Enrico Francioni, contrabass – SOLO [Nr.19] Version I (DEMO)

Thanks to:
family Stockhausen and the Universal Edition-Vienna
to be welcomed and have enabled the realization of this project

Steven Yi and James Hearon
for permission to use some parts of the article

Victor Lazzarini and Steven Yi for Csound iOS

Vittoria Verdini
for help in the English translation