Johan Hill may be out, but The Batman movie has enlisted one person this week – Rogue One composer Michael Giacchino.

Composer Michael Giacchino has said yes to The Batman. Filmmaker Matt Reeves surprised the crowd Friday at an event at London’s Royal Albert Hall, where Giacchino and and fellow composer David Arnold were engaging in some friendly competition by comparing works they’ve done.

When Reeves took the stage, he got down on one knee in a mock proposal, asking Giacchinoto board his project, as captured in a video from an attendee.