Table: orchestra_arrangement
Columns: reference
author
section_size
violins
violas
celli
basses

Question: How many violines are suggested in the "Arranged by Nelson Riddle" reference with section size of 12 players?
SQL: SELECT "violins" FROM orchestra_arrangement WHERE "reference" = '"Arranged By Nelson Riddle"' AND "section_size" = '12 players'

Question: How many cellos are suggested in the reference with section size for 20 players?
SQL: SELECT "celli" FROM orchestra_arrangement WHERE "section_size" = '20 players'

Question: What reference, written by Nelson Riddle, suggests 2 violas?
SQL: SELECT "reference" FROM orchestra_arrangement WHERE "violas" = 2 AND "author" = 'Nelson Riddle'

Question: What is the biggest number of basses suggested in either one of the references?
SQL: SELECT MAX("basses") FROM orchestra_arrangement