Buy music › Derek Ball: Mary's Piece [download] Image 1 of 1 Derek Ball: Mary's Piece [download] £5.75 Computer typeset score (10pp) saved to PDF for immediate download. Add To Cart Added! Computer typeset score (10pp) saved to PDF for immediate download. Version for String Quartet, 1999. You might also like McEwen: String Quartet No 9 in B Minor (1920) £26.00 McEwen: String Quartet No 12 "Suite Of Old National Dances" (1923) £18.00 Thomas Wilson: String Quartet No 4 [download] £17.00 Claire McCue: After the Before [download] £21.50 McEwen: String Quartet No 16 'Quartet Provençale' (1936) £29.00