Original: They have also worked together professionally, once when she appeared in Aerosmith's music video for "Crazy" in 1993 and again when Aerosmith performed many of the songs in the film Armageddon (1998), in which Tyler starred.
Simplified: They have even made their careers intertwine when Liv performed in Aerosmith's video "Crazy" and when Aerosmith wrote and performed many of the songs in Liv's film Armageddon.