on cue
Exactly when expected or appropriate.
I was talking to Bob about the noise made by my neighbours, when right on cue their music started thumping through the wall.
Acting is the ability to dream on cue. Ralph Richardson
Okay, now you're starting to scare me," Wes says. "No, scary is the way people can alter their voices on cue. Like your imitation of that creepy guy who lives at your house." "You mean my dad?" he laughs. Laurie Faria Stolarz
When I went to acting school, the kids that got the best grades were the kids that could cry on cue. But it didn't really translate into careers for any of them, because the external is the easy part. Albert Brooks
I'm not one of those people who can cry on cue. If I have to cry in an audition, I'm like, 'Okay, let me see what I can do. Melanie Lynskey
One of the best moments of any Liars show is hearing the crowd squawk 'We're doomed! We're doomed!' on cue during 'We Fenced Other Houses with the Bones of Our Own.' Maybe not the most uplifting audience sing-along in the indie rock world, but one of the most reliably entertaining. Rob Sheffield