1. Look through §83, item 1, note 2: http://evartist.narod.ru/text1/43.htm
Also, words with evaluative meaning are connected to the main word with the hyphen.

The names of the songs are figurative, it's difficult to say what they can mean unless you know the lyrics or even the background of the lyrics.

2. Как бы не так = (appr.) It's not what you think
Вот такие дела = (appr.) Now you understand
Ты уже не придёшь = (appr.) You won't ever come
Всё как надо = (appr.) Everything is done all right.

3. Что-то типа «обманула, подвела».