Pulse, tempo and metre

Today we are going to listen some musical examples to analyse some questions about the theory.
Pay attention to the time signature and the indications about tempo.

1º Example: Concerto for two violins, by J.S.Bach.
2º Example:  Clarinet Concerto, by Mozart 

Some video-tutorials about "time signature"
1º Link:  They use American terms.
2º Link: They use British accent, and it goes a bit fast.