The drum is a member of the percussion group of musical instruments. In the Hornbostel-Sachs classification system, it is a membranophone. Drums consist of at least one membrane, called a drumhead or drum skin, that is stretched over a shell and struck, either directly with the player's hands, or with a percussion mallet, to produce sound. There is usually a resonance head on the underside of the drum, typically tuned to a slightly lower pitch than the top drumhead. Other techniques have been used to cause drums to make sound, such as the thumb roll. Drums are the world's oldest and most ubiquitous musical instruments, and the basic design has remained virtually unchanged for thousands of years.
The snare drum is the heart of the drum kit, particularly in rock, due its utility of providing the backbeat. When applied in this fashion, it supplies strong regular accents, played by the left hand (if right handed), and the backbone for many fills. Its distinctive sound can be attributed to the bed of stiff snare wires held under tension to the underside of the lower drum head. When the stiff wire are "engaged" (held under tension), they vibrate with the top (snare-side) drum skin (head), creating a snappy, staccato buzzing sound, along with the sound of the stick striking the batter head.
Trigger sensors are most commonly used to replace the acoustic drum sounds, but they can often also be used effectively with an acoustic kit to augment or supplement an instrument's sound for the needs of the session or show. For example, in a live performance in a difficult acoustical space, a trigger may be placed on each drum or cymbal, and used to trigger a similar sound on a drum module. These sounds are then amplified through the PA system so the audience can hear them, and they can be amplified to any level without the risks of audio feedback or bleed problems associated with microphones and PAs in certain settings.
Something else that you might like to consider is taking a cue from the bassists who have inspired you. Music is an art in which there's no shame in having an idol, and with plenty of signature bass guitars available, you can gear yourself up to follow in legendary footsteps. Take the Fender Jaco Pastorius Fretless Jazz Bass Guitar, for instance. Meticulously modelled after Jaco's own instrument, it carries on his spirit with a fretless design that lets you really unleash your creativity on the stage.