Knock Three Times (1970) Tony Orlando & Dawn. This is a fun song to sing along with & seems fun to play along with too. I've never lived in an apartment but these lyrics make it sound like a fun way to meet people in the building. It seems so innocent but this is an oldie so these situations likely won't happen today & that's sad but at the time he sang this, it just seemed so fun. Is this something you would have ever done if you lived in an apartment then?