Let's start with a little history on the concept of Drumkits within in Hydrogen. It began as a dedicated drum machine but has evolved into a versatile sample-based sound synthesizer/sequencer that is capable of generating and manipulating all sorts of sounds. Hence the original "Drumkit" terminology is slightly misleading. You can load any kind of sound into a "Drumkit" and manipulate that sound just like playing a regular synthesizer. This is also the main reason why the Piano Roll Editor was introduced.

To sum it up, nowadays a Drumkit is a collection of a number of instruments (snare, kick, sampled voice, bass sound ...), using one or more components which each can consist of multiple layered samples.

	Tip
	In case you are not familiar with the world of sound synthesis, you can check out the Glossary for a number of useful definitions.