Can Pro Tools detect tempo?
Tapping in Pro Tools
One way to find the tempo in pro tools is simply tapping. You can tap in by pressing the T on your keyboard repeatedly in time of the music. Sometimes you might be working on a slower track. It will give you a more precise result.
How do you know what key a song is in?
The easiest way to figure out the key of a song is by using its key signature. The number of sharps/flats in the key signature tell you the key of the song. A key signature with no sharps or flats is the key of C (or A minor).