Heard on the radio in 1986: "Now, here's Al Jarreau. We can't give away any more tickets to the Jarreau concert because that was Tuesday, but B.B. King will be here at the Westport Playhouse..."
It's unusual to hear a DJ clarify that tickets can't be given away because a concert already took place. Mentioning an upcoming performance in the same breath, however, is wise because it gives the audience something else to anticipate.