How by removing the bottom head of a tom drum change sound?

1) Louder and more resonant. Without the bottom head, the drum will resonate more freely and produce a louder sound. This can be a desired effect for certain types of music, such as rock or metal.

2) More sustain. The drum will also sustain longer without the bottom head. This can be useful for creating dramatic effects or for playing longer notes.

3) Different attack and decay. The attack (the initial sound of the drum) and decay (the time it takes for the sound to fade away) will be different with the bottom head removed. This can give the drum a unique sound that can be used to create a variety of musical effects.

4) More sensitive to touch. The drum will be more sensitive to touch without the bottom head, which can make it easier to play. This can be beneficial for beginners or for drummers who want to have more control over their sound.

Overall, removing the bottom head of a tom drum can change the sound in a number of ways. It can make the drum louder, more resonant, and sustain longer. It can also change the attack and decay of the drum and make it more sensitive to touch. These effects can be used to create a variety of musical sounds.