Table: song_details_7
Columns: version
length
album
remixed_by
year

Question: Which Remixed by has a Version of album version, and an Album of les mots?
SQL: SELECT "remixed_by" FROM song_details_7 WHERE "version" = 'album version' AND "album" = 'les mots'

Question: How long was the instrumental version in 1986?
SQL: SELECT "length" FROM song_details_7 WHERE "year" = 1986 AND "version" = 'instrumental'

Question: Which long version was remixed in 1986?
SQL: SELECT "remixed_by" FROM song_details_7 WHERE "year" = 1986 AND "version" = 'long version'