How do I find out a songs BPM?
Multiply the number of measures by the number of beats per measure. After you turn off the stopwatch, count up how many measures you heard. Multiply this number by the number of beats in each measure to find out how many beats there are in 30 seconds.
What key is this YouTube song in?
YouTube Song is written in the key of Am.
How do you find tempo in audacity?
The most common way that Audacity can be used to find the BPM of a track is by using its own Beat Finder (Accessed by: Analyze > Beat Finder). This allows users to listen to a piece of music, and set parameters for the number of beats to find.