There are many different types of keyboards available. On the lower end are keyboards that you’d find in a toy store, while music stores have keyboards that are more fully-featured and intended for serious musicians and producers. These types of keyboards are commonly loaded with different voices, tones, rhythms, and sound effects to give a player or producer a lot of control over their sound. Within this type of keyboard, you’ll find synthesizers and MIDI controllers. Another differentiator among keyboards is the number of keys. Some keyboards have fewer than the traditional 88 keys you’d find on a digital piano. This allows certain keyboards to be more compact and generally doesn’t impact the ability for the player to create music. While some keyboards have keys that are weighted, many do not. This means that keyboards do not move or react like piano keys.
Piezoelectric pickups (also called "piezo" pickups) are non-magnetic pickups that use a transducer to convert vibrations in the instrument's body or bridge into an electrical signal. They are typically mounted under the bridge saddle or near the bridge and produce a different tone from magnetic pickups, often similar to that of an acoustic bass. Piezo pickups are often used in acoustic bass guitars to allow for amplification without a microphone.
Other design options include finishes, such as lacquer, wax and oil; flat and carved designs; luthier-produced custom-designed instruments; headless basses, which have tuning machines in the bridge of the instrument (e.g., Steinberger and Hohner designs) and several artificial materials such as luthite. The use of artificial materials (e.g., BassLab) allows for unique production techniques such as die-casting, to produce complex body shapes. While most basses have solid bodies, they can also include hollow chambers to increase the resonance or reduce the weight of the instrument. Some basses are built with entirely hollow bodies, which change the tone and resonance of the instrument. Acoustic bass guitars have a hollow wooden body constructed similarly to an acoustic guitar, and are typically equipped with piezoelectric or magnetic pickups and amplified.
In traditional music such as country music, folk rock, and related styles, the bass often plays the roots and fifth (typically the fifth below the root) of each chord in alternation. In these styles, bassists often use scalar "walkups" or "walkdowns" when there is a chord change. In Chicago blues, the electric bass often performs a walking bassline made up of scales and arpeggios. In blues rock bands, the bassist often plays blues scale-based riffs and chugging boogie-style lines. In metal, the bass guitar may perform complex riffs along with the rhythm guitarist or play a low, rumbling pedal point to anchor the group's sound.
The bass guitarist sometimes breaks out of the strict rhythm section role to perform bass breaks or bass solos. The types of bass lines used for bass breaks or bass solos vary by style. In a rock band, a bass break may consist of the bassist playing a riff or lick during a pause in the song. In some styles of metal, a bass break may consist of "shred guitar"-style tapping on the bass. In a funk or funk rock band, a bass solo may showcase the bassist's percussive slap and pop playing. In genres such as progressive rock, art rock, or progressive metal, the bass guitar player may play melody lines along with the lead guitar (or vocalist) and perform extended guitar solos.
In the 2010s, some drummers use a variety of auxiliary percussion instruments, found objects, and electronics as part of their "drum" kits. Popular electronics include: electronic sound modules; laptop computers used to activate loops, sequences and samples; metronomes and tempo meters; recording devices; and personal sound reinforcement equipment (e.g., a small PA system to amplify electronic drums and provide a monitor).
To keep proper pitch across all frets in a multi-scale bass guitar, a fanned fret design is applied to the fingerboard. In this case, the frets extend from the neck of the instrument at an angle, in contrast to the standard perpendicular arrangement in standard neck designs, in which the fret spacing is wider for the long scale and closer for the short scale. This is not to be confused with perfect intonation across the whole neck, which is a feature of true temperament frets. Proponents of multi-scale and fanned frets designs also claim benefits such as comfort and better ergonomics.
In the 1980s, bass designers continued to explore new approaches. Ned Steinberger introduced a headless bass in 1979 and continued his innovations in the 1980s, using graphite and other new materials and (in 1984) introducing the TransTrem tremolo bar. In 1982, Hans-Peter Wilfer founded Warwick, to make a European bass, as the market at the time was dominated by Asian and American basses. Their first bass was the Streamer Bass, which is similar to the Spector NS. In 1987, the Guild Guitar Corporation launched the fretless Ashbory bass, which used silicone rubber strings and a piezoelectric pickup to achieve an "upright bass" sound with a short 18-inch (457 mm) scale length. In the late 1980s, MTV's "Unplugged" show, which featured bands performing with acoustic instruments, helped to popularize hollow-bodied acoustic bass guitars amplified with piezoelectric pickups built into the bridge of the instrument.
The string can be plucked (or picked) at any point between the bridge and the point where the fretting hand is holding down the string on the fingerboard; different timbres (tones) are produced depending on where along the string it is plucked. When plucked closer to the bridge, the string's harmonics are more pronounced, giving a brighter tone. Closer to the middle of the string, these harmonics are less pronounced, giving a more mellow, darker tone.
Toward the end of the 1920s, variations of the hi-hats were introduced. One of the most popular hand held hi-hat cymbal variations used was called the "hand sock cymbals". The reason for the name "hi-hat" was because earlier versions of the hi-hat were referred to as a "low boy". The evolution that became the "hi-hats" allowed drummers to play the two cymbals with drum sticks while simultaneously controlling how open or closed the two cymbals were with their foot. The pedal could also be used to play the cymbals with the foot alone, while the right hand played other drums. By the 1930s, Ben Duncan and others popularized streamlined trap kits leading to a basic four piece drum set standard: bass, snare, tom-tom, and a larger floor tom. In time, legs were fitted to larger floor toms, and "consolettes" were devised to hold smaller tom-toms (ride toms) on the bass drum.
Some drummers arrive at the venue with their drum kit and use the mics and mic stands provided by the venue's sound engineer. Other drummers bring their all of their own mics, or selected mics (e.g., a good quality bass drum mic and a good mic for the snare) to ensure that they have good quality mics for each show. In bars and nightclubs, the microphones supplied by the venue can sometimes be in substandard condition, due to the heavy use they experience.