CREATE TABLE table_22644589_4 (free_dance__fd_ VARCHAR, compulsory_dance__cd_ VARCHAR)

What was the free dance score in the event where compulsory dance score was 15.99?
SELECT free_dance__fd_ FROM table_22644589_4 WHERE compulsory_dance__cd_ = "15.99"
SELECT "free_dance__fd_" FROM "table_22644589_4" WHERE "15.99" = "compulsory_dance__cd_"