CREATE TABLE table_75452 ("Track" TEXT, "Song title" TEXT, "Length" TEXT, "Composer ( s ) " TEXT, "Performance location ( s ) " TEXT)

Who is the composer of the song with a length of 6:24?
SELECT "Composer(s)" FROM table_75452 WHERE "Length" = '6:24'
SELECT "Composer(s)" FROM "table_75452" WHERE "Length" = '6:24'