Table: revolution_discs
Columns: track
song_title
length
composer_s
performance_location_s

Question: Who is the composer of the song with a length of 6:24?
SQL: SELECT "composer_s" FROM revolution_discs WHERE "length" = '6:24'

Question: What is the lengtho f track 16?
SQL: SELECT "length" FROM revolution_discs WHERE "track" = '16'