Years composed: 2013 – 2015

Instrumentation: fl, cl (a, b-flat, e-flat), vn, va, vc, perc*, pno

* – 1 player. Vibes, (7) crotales, snare drum, (2) toms, bass drum, (3) suspended cymbals (large, medium, small), and (3) suspended triangles (large, medium, small)

Duration (approx.): 20′


i. – tuning games/emergence [ca.5′]

ii. – through a yellow sky [ca. 12′]

iii. – interrobang [ca.3′]

Score Samples.


A catalyst is a substance that increases the rate of a chemical reaction without itself undergoing any kind of permanent change. In the case of my septet, the catalyst for the entire piece is the opening pitch, A5 (440Hz). It is the note you hear an orchestra tune up to and is in fact the pitch for which all other pitches are tuned against (and therefore determined, according to our present tuning system). Many of the harmonies and melodies of this septet are built off of it or use it as an axis point.

Copyright © Jay Derderian (ASCAP), 2017. All Rights Reserved.


One thought on “Catalyst

Leave a Reply

Fill in your details below or click an icon to log in: Logo

You are commenting using your account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s