What chords does toe - 1, 2, 3, 4 use?

What tempo should you practice 1, 2, 3, 4 by toe?

Which chords are part of the key in which toe plays 1, 2, 3, 4?

When did 1, 2, 3, 4 hit the market?

What is the genre of 1, 2, 3, 4?