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Spectra – 20 Celli

by Scott Roller

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20 Celli was produced in my home studio in Stuttgart between 24-28 May 2020 at the request of two friends (a Lufthansa pilot with a passion for video and a musician) who were looking for music improvised for the 10-hour video Covid-19 follows Amber 575 –documenting (with real time video of the flight seen from the cockpit) a Lufthansa flight in March 2020 from Peking to Frankfurt. I was assigned a 16-minute slot in the film (starting at the seventh hour) and got started.

20 Celli uses only the first 20 harmonic overtones the low C-string on the cello (about 66 Hz), presented in LAYERS,using up to 20 tracks at a time. It is has a slow and steady development towards complexity/density which returns to simplicity at the end. It is an attempt to make music in which there is a sense of waiting, very slow progression, perhaps with a sense that “nothing is happening” while at other times, passing through some very intense and maximalist states.

A video interpretation by Michi Meier was developed in June 2020 and is available on Vimeo:


It vibrates with fine sensibility to the harmonic developments and portrays the spectral nature of the sound beautifully. Thank you, Michi!


released April 15, 2022

Scott Roller – celli, recording, mixing and editing
First released May 2020.




Rollermusic Stuttgart, Germany

Music by Scott Roller (USA/D): multi-instrumentalist, improviser, composer, educator and producer based in Stuttgart, Germany.

From composed and improvised chamber music to a wide range of electronic, electroacoustic music from now and the past 40 years.

Current emphasis on sound design, studio-based work which is manifested in film, video & live performances. Artistic Director of Open_Music.
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