The duet speaks with the infinite but tragic like between Chang'e and Houyi, that are determined by the Chinese myth from the moon goddess, upon which the movie relies on. Amid many artists who definitely have recorded versions of "Always and Forever" is definitely the American R&B vocal team Whistle, https://always-and-forever27275.rimmablog.com/36104449/the-basic-principles-of-always-and-forever-mine