In this video
Here's how to play the awesome them from the movie JAWS, which was composed by legendary film score composer John Williams.
This is a super EASY theme to play!
However, to get the low sound that makes this more frightening, you'll either need a large keyboard or piano (full size pianos are 88 keys, my digital piano is 76 keys) OR use the transpose feature on your keyboard to transpose DOWN by 12 semi-tones. This isn't essential, it just makes it sound cooler!