PRAELUDIUM op.6 (1984)      
  solo harp 4
minutes
VANDERBEEK
       
SONATA FOR VIOLIN SOLO op.8      
  solo violin 10
minutes
VANDERBEEK
       
 PARTITA op.11 (1985)      
  solo organ 14
minutes
VANDERBEEK
       
PROCESSIONAL op.13 (1985)      
  solo organ 4
minutes
VANDERBEEK
       
SONATA FOR TWO VIOLINS op.16 (1985 rev. 1987)      
  2 violins 14
minutes
VANDERBEEK
       
ELEGY FOR TWO VIOLINS op.17 (1985 rev. 1988)      
  2 violins 6
minutes
VANDERBEEK
       
VIOLA SONATA op.18 (1986)      
  vla. pno. 15
minutes
VANDERBEEK
       
CONCERTINO op.19 (1986)      
  2 pianos 17
minutes
VANDERBEEK
       
PIANO SONATA op.27 (1987 rev. 1988)      
  solo piano 18
minutes
VANDERBEEK
       
MARVIG VARIANTS op.29 (1995)      
  vln. pno 8
minutes
VANDERBEEK
       
AT DEAD OF NIGHT op.32 (1996)      
  solo piano 6
minutes
ORIANA
       
SONATA FOR HARP (VYRNWY SONATA) op.33 (1997)      
  solo harp 12
minutes
ORIANA
       
CLARINET SONATA op.39 (1999)      
  cl. pno. 15
minutes
ORIANA
       
BRASLUNIA'R O'R MOR GALLUOG (VISIONS FROM A MIGHTY SEA) op.44 (2003)      
  solo piano 6
minutes
ORIANA
       
SONATA FOR ALTO SAXOPHONE op.47 (2005)      
  alt. sax. & pno 15
minutes
ORIANA
       
SONATA FOR SOLO VIOLA op.60 (2011)      
  solo viola 12
minutes
ORIANA
       
HANES TALIESIN op.61 (2012)      
  solo clarinet 20
minutes
ORIANA
       
GREGYNOG SUITE op.64 (2013)      
  solo harp 15
minutes
ORIANA