Greenbaum’s 8 string quartets were written over a span of 30 years. Quartets to have commissioned, performed and recorded them include:

AYO String Quartet
Beldere String Quartet
Filitenko Quartet (Malta)
Flinders Quartet
Kuss Quartet (Berlin)
Orava Quartet
Ormond String Quartet
Sun Music Quartet (London)
Tarraj Quartet
The Crossing Machine
Yooh Han Ensemble (Singapore)

String Quartet No.1
Time's Arrow (1991)
duration: 13’
GRT • 014

String Quartet No.2
Nelson Interludes (1995/2009)
duration: 12’
GRT • 060

String Quartet No.3 (1999)
duration: 14’
GRT • 059

String Quartet No.4
Danny Boy Variations (1999)
duration: 4’
GRT • 061


String Quartet No.5
Light from Distant Stars (2005 / 2012)
duration: 11’
GRT • 109

String Quartet No.6
The Lonely Planet (2015)
duration: 24’
GRT • 184

String Quartet No.7
Recognition (2016)
duration: 22’
GRT • 185

String Quartet No.8
once more around the sun (2023)
duration: 20’
GRT • 230


Other chamber works by Greenbaum that include string quartet:


Easter Island
for fl, bcl, pno, 2vln, vla, vc (2008)
duration: 20’
GRT • 135

Oxygen
for shakuhachi and string quartet (2016)
duration: 8’
GRT • 191

Translations
concerto for recorder, erhu and string quartet (2017)
duration: 24’
GRT • 200

Tide Moon Earth Sun
concerto for harp and strings (2018)
duration: 23’
GRT • 202